Stabbed an NPC with love injector - lovesick not getting removed?

[BlackJesus]

Many days have past and they are still lovesick? Do I need to pass the time on screen with them for the lovesickness to go away?

[Bwixie]

if you are not in the zone (or the zones next to it) it is not simulated, you will need to wait for it to wear off.