Trust me, in my case I'm not expecting it, but I've wondered this. My ex said she'd 'closed the door' on me. Personally, I've never been the one to end a relationship, so I've always wondered how people can just say I'm done with you for life.
My ex did eventually contact me, but in the end, I really don't know why. There was some reminising, talk of having missed me, our dinner meet - which she initiated went great, but she went ice cold the following day. I'll never know what happened.
Anyway, I guess my question is just, how do some people just decide - I'm done with you.