One going through my head is called 'Another hump 'em and dump 'em situation', singer unknown to me, but boy, does it get you where it hurts, especially if you've just been shunted out of an intensly intimate relationship for no other reason than paranoia.

Otherwise - as recorded by Abba - 'The day before you came' puts a slant on things that might have gone astray....

Life goes on, whether you want to live it or not. You are the only one who can decide. But it is always best to stay friends if at all possible....

LTS