Thanks for reporting, I'll look into this issue

Just want to add that I'm experiencing this too. I'm not using any mods that would conflict with psychology(that I know of, at least).

Here is my mod list(copied from my mod manager XML file):

<li>Harmony</li>
<li>Core</li>
<li>Royalty</li>
<li>Ideology</li>
<li>Biotech</li>
<li>Vanilla Backgrounds Expanded</li>
<li>HugsLib</li>
<li>Mod Manager</li>
<li>Scattered Stones</li>
<li>Vanilla Expanded Framework</li>
<li>Scenario Amender [1.4]</li>
<li>Strike the Earth! - Stone</li>
<li>SRTS Expanded</li>
<li>[ELIF] SRTS - Helicopters</li>
<li>Giddy-up! Core</li>
<li>Giddy-up! Caravan</li>
<li>Giddy-up! Ride and Roll</li>
<li>Giddy-up! Battle Mounts</li>
<li>Giddy-Up! Add-on: Animal Saddles</li>
<li>Psychology (unofficial) v1.1-1.4</li>
<li>Mass Lovin'</li>
<li>Polyamory Beds (Vanilla Edition)</li>
<li>Vanilla Achievements Expanded</li>
<li>Vanilla Weapons Expanded</li>
<li>Vanilla Weapons Expanded - Quickdraw</li>
<li>Vanilla Weapons Expanded - Laser</li>
<li>Vanilla Weapons Expanded - Heavy Weapons</li>
<li>Vanilla Weapons Expanded - Coilguns</li>
<li>Vanilla Factions Expanded - Settlers</li>
<li>Vanilla Weapons Expanded - Frontier</li>
<li>Vanilla Factions Expanded - Classical</li>
<li>Vanilla Factions Expanded - Mechanoids</li>
<li>Vanilla Factions Expanded - Medieval</li>
<li>Vanilla Weapons Expanded - Grenades</li>
<li>Vanilla Factions Expanded - Pirates</li>
<li>Combat Extended</li>
<li>Alpha Mythology</li>
<li>Dubs Bad Hygiene</li>
<li>Hospitality</li>
<li>Wall Light</li>
<li>LightsOut</li>
<li>Stonecutting Extended</li>
<li>Haul to Stack</li>
<li>Loading In Progress</li>
<li>Reasonable Components</li>
<li>Replace Stuff</li>
<li>Self Dyeing</li>
<li>Smart Farming</li>
<li>Simple Utilities: Ceiling</li>
<li>Simple Utilities: Fridge</li>
<li>Electric Stonecutting Table</li>
<li>Blueprints</li>
<li>Allow Tool</li>
<li>Clean Pathfinding</li>
<li>Trading Control</li>
<li>Tilled Soil</li>
<li>Vanilla Furniture Expanded</li>
<li>Vanilla Furniture Expanded - Architect</li>
<li>Misc. Training</li>
<li>RimHUD</li>
<li>Neutroamine craftable</li>
<li>All Ideoligions Are Fluid</li>
<li>Smarter Construction</li>
<li>Replantable Anima Trees</li>
<li>Replantable Gauranlen Trees</li>
<li>Vanilla Furniture Expanded - Security</li>
<li>Reinforced Walls+</li>
<li>Q's Biotech Patches</li>
<li>Forien's Naturalize Genome</li>
<li>Consistent Gene Inheritance</li>
<li>Easy Conversions</li>
<li>Biotech Expansion - Core</li>
<li>Biotech Expansion - Mythic</li>
<li>Snap Out!</li>
<li>Chill the F*** Out</li>
<li>Go the F*** to Sleep - Forked</li>
<li>Do Your F****** Research</li>
<li>AutoDrillReUpload</li>
<li>Identity</li>
<li>Integrated Genes</li>
<li>Lifter Plz Do More Jobs</li>
<li>Mechanoid Idle Optimization</li>
<li>Sanguophage Feed Relationship</li>
<li>Ugly Together</li>
<li>Wheelchairs</li>
<li>Dress Patients (1.4)</li>
<li>Autocleaner</li>
<li>Combat Extended Aimbot</li>
<li>Combat Extended Armors</li>
<li>Combat Extended Attachments</li>
<li>Combat Extended Important Ammo</li>
<li>Combat Extended Melee</li>
<li>Combat Effects for Combat Extended (Continued)</li>
<li>Combat Extended: Weapons</li>
<li>Combat Extended Guns</li>
<li>CE Custom Ammo</li>
<li>CE Guns But It's (Mostly) AKs</li>
<li>Combat Extended Fixes</li>
<li>Combat Extended: Shields</li>
<li>Vanilla Expanded - Ideology Patches</li>
<li>Vanilla Expanded - Royalty Patches</li>
<li>EzOutfit</li>
<li>GreenRim</li>
<li>[KV] More Trait Slots [1.4]</li>
<li>Deconstruct First</li>
<li>Gene Ripper</li>
<li>Just Put It Over There</li>
<li>Movable Biotech</li>
<li>Painting is construction</li>
<li>MechSupercharger</li>
<li>Trader ships</li>
<li>UI Not Included: Customizable UI Overhaul</li>
<li>Ammo Variety - Shotguns</li>
<li>Craftable Synthread and Hyperweave</li>
<li>Quest Reward Rebalance</li>
<li>Stack XXL</li>
<li>Tiered Mechs</li>
<li>VFE: Mechanoids Assemble Mechanoid Components</li>
<li>Vanilla Plants Expanded</li>
<li>[FSF] Indoor Tree Farms</li>
<li>Vanilla Animals Expanded</li>
<li>Vanilla Animals Expanded — Caves</li>
<li>Vanilla Animals Expanded — Endangered</li>
<li>Vanilla Animals Expanded — Royal Animals</li>
<li>Vanilla Apparel Expanded</li>
<li>Vanilla Apparel Expanded — Accessories</li>
<li>Vanilla Armour Expanded</li>
<li>Vanilla Base Generation Expanded</li>
<li>Vanilla Books Expanded</li>
<li>Vanilla Brewing Expanded</li>
<li>Vanilla Brewing Expanded - Coffees and Teas</li>
<li>Vanilla Furniture Expanded - Power</li>
<li>Vanilla Chemfuel Expanded</li>
<li>Vanilla Cooking Expanded</li>
<li>Vanilla Cooking Expanded - Stews</li>
<li>Vanilla Fishing Expanded</li>
<li>Vanilla Cooking Expanded - Sushi</li>
<li>Vanilla Events Expanded</li>
<li>Vanilla Factions Expanded - Ancients</li>
<li>Vanilla Factions Expanded - Insectoids</li>
<li>Vanilla Factions Expanded - Vikings</li>
<li>Vanilla Fishing Expanded - Fishing Treasures AddOn</li>
<li>Vanilla Furniture Expanded - Art</li>
<li>Vanilla Furniture Expanded - Farming</li>
<li>Vanilla Furniture Expanded - Medical Module</li>
<li>Vanilla Furniture Expanded - Production</li>
<li>Vanilla Furniture Expanded - Spacer Module</li>
<li>Vanilla Genetics Expanded</li>
<li>Vanilla Hair Expanded</li>
<li>Vanilla Helixien Gas Expanded</li>
<li>Vanilla Ideology Expanded - Anima Theme</li>
<li>Vanilla Ideology Expanded - Dryads</li>
<li>Vanilla Ideology Expanded - Hats and Rags</li>
<li>Vanilla Ideology Expanded - Icons and Symbols</li>
<li>Vanilla Ideology Expanded - Memes and Structures</li>
<li>Vanilla Ideology Expanded - Relics and Artifacts</li>
<li>Vanilla Ideology Expanded - Splits and Schisms</li>
<li>Vanilla Outposts Expanded</li>
<li>Vanilla Persona Weapons Expanded</li>
<li>Vanilla Plants Expanded - More Plants</li>
<li>Vanilla Plants Expanded - Succulents</li>
<li>Vanilla Psycasts Expanded</li>
<li>Vanilla Social Interactions Expanded</li>
<li>Vanilla Storytellers Expanded - Diego Industrial</li>
<li>Vanilla Storytellers Expanded - Empress Evil</li>
<li>Vanilla Storytellers Expanded - Freya Fierce</li>
<li>Vanilla Storytellers Expanded - Igor Invader</li>
<li>Vanilla Storytellers Expanded - Maynard Medieval</li>
<li>Vanilla Storytellers Expanded - Neron Neolithic</li>
<li>Vanilla Storytellers Expanded - Oskar Obnoxious</li>
<li>Vanilla Storytellers Expanded - Perry Persistent</li>
<li>Vanilla Storytellers Expanded - Winston Waves</li>
<li>Vanilla Textures Expanded</li>
<li>Vanilla Textures Expanded - Variations</li>
<li>Vanilla Trading Expanded</li>
<li>Vanilla Traits Expanded</li>
<li>Vanilla Weapons Expanded - Non-Lethal</li>
<li>Vanilla Weapons Expanded - Tribal</li>
<li>Vanilla Skills Expanded</li>
<li>Just Copy</li>
<li>Better Workbench Management</li>
<li>Work Tab</li>
<li>Share The Load</li>
<li>Pick Up And Haul</li>
<li>QualitySurgeon</li>
<li>Integrated Xenotypes</li>
<li>Faction Control 1.4</li>
<li>Medical Tab</li>
<li>Animal Tab</li>
<li>Underground Power Conduits</li>
<li>EPOE 1.4 (Expanded Prosthetics and Organ Engineering)</li>
<li>Traders Have Money</li>
<li>Turn It On and Off</li>
<li>Emergent Genes</li>
<li>Camping Stuff</li>
<li>Clean Textures</li>
<li>Simple sidearms</li>
<li>Faction Manager v1.4</li>
<li>Dubs Performance Analyzer</li>
<li>Vanilla Weapons Expanded - Makeshift</li>
<li>XML Extensions</li>
<li>[HRK] Vanilla Expanded / Combat Extended - Toggleable patches &amp; tweaks</li>
<li>RocketMan - Performance Mod</li>
<li>Performance Optimizer</li>

Wanted to ask - any progress on this issue? Because I'm having the same exact problem, and it happens with every single case of proposal. Every SINGLE proposal ends up with a rejection - the proposing pawn will then be hit with the regular rejection penalty, but the person rejecting will accure additional -75 penalty ("my proposal was rejected", "being cheated on") both of which are false / make no sense.
I don't have any mods that modify romance systems, AFAK.
It's basically killing every one of my playthroughs. Sooner or later proposals will start to happen and that will result in spiral of catatonic pawns because they have suddenly nonsensical -100 mood modifiers lasting months.

The breakdown of marriage proposals definitely makes using this mod a relative dead-end for any of my games. Tried it out with one of my saves and ended up replicating this exact issue, with the series of rejected my proposal and cheated on me moods afflicting the rejecting pawn.

Casually reading through some of the source code, seems like this may be related to something in the RomanceHelperMethods from BreakUpHelperMethods.cs. Possibly that TryGainOpinionAndAdjustMood (ln 240) and how it's traversing the PsychologyMethodNameDict dictionary list when adjusting the moods, during the foreach loop (ln 245) it's overly matching with multiple keys. Rather than simply finding the IRejectedTheirProposal, it also matches up with the CheatedOnMe and RejectedMyProposal as well.

Still having this issue. Will probably have to disable the mod until it's fixed, because it renders everyone unstable and useless.

Also having this problem. Has pretty much ended my playthrough :( currently have 3 pairs of pawns with these debuffs

Also reporting this issue.

Can confirm this is very much still an issue. One proposal can pretty much destroy the mental state of a pawn regardless of how many mood buffs they have.

This issue has been unresolved since December. This mod seems pretty dead and I will be uninstalling it once my current run is over due to the numerous issues and bugs. Very dissapointing this mod was one of my favourites for years.

The issue is fixed in my version. I'll push the update when I test it out (can't give ETA on that but hopefully in a week).
Sorry for the huge delay, there are some issues with the source code that really made fixing things much harder than it's usually is.

thanks for fixing it. I'm so excited for the update

the issue is still not fixed to this day, still getting the same issue :c

same, not fixed

hoping this is fixed soon. i've taken a whole pause on this game until it is :(

I'n getting a -49 from my proposal was rejected instead of the standard -18. At 25 days long it seems a bit harsh. Is there any way to change this?