Retroactive jealousy is sometimes known as retroactive jealousy OCD, as it’s obsessive overthinking about sexual and/or romantic events, people and encounters from a partner’s past.
Boyfriend: Oh I forgot to tell u, I bumped into Rosie my ex in the mall yesterday
Girlfriend: * passive aggressively* oh, wow nice why did u stop and talk to her wasn't it too awkward ?
Boyfriend: Not at all, she was really sweet
Girlfriend: *thinks about this for the rest of her life* *googles why she’s so jealous of her boyfriends ex* *diagnoses her self with retroactive jealousy*
Mikey: Man, why don't you just get over her. It's been 3 weeks since you broke up and you barely seemed to like her.
Ezekiel: Not sure, Mike. It must be retroactive love.