Moving into second hand story now so I can't vouch for the authenticity..
*ring ring*
Mate: Hello?
Mates Ex: I think we are growing apart and should probably stop seeing each other.
Mate: Fair enough.
*click*
*ring ring*
Mate: Hello?
Mates Ex: WHAT??? JUST LIKE THAT???
Mate: Yeah.
*click*
Well, it wasn't quite like that but...
I'd been seeing a guy for some months, and knew that really he wasn't right for me, but I was young, and didn't want to be single not having had much luck before, and didn't have the courage to do anything about it. One of the problems was his jealousy of me spending time with other people - like family. So when Mum and I went away for a weekend together, I got back to find a note delivered through the door saying he'd had enough and it was over. Phew!
He rang the next day and said "I've made a terrible mistake", and I said "No, I don't think you have", and that was that.