does the relation bonus you get from consumables expire and do relations fall over time?

[Aranwen1]

ive played a lot but never actually paid any attention to this.

if youre not interacting with people does youre relation with them fall over time like when youre married?

does the bonus relation you get from perfume or similar item go away after some time?

[Fajeth]

From what I have seen, your relations should only drop when something affects them in a negative way. Might be wrong though