I, too, think it depends on the details. I can only share my story. My ex contacted me after around 2 yrs of no contact. Things had ended badly and I had never gotten over him. So when he contacted me, I eventually agreed to talk. We never really "talked" but we talked/went out for about 2 months until I decided I didn't want all those past problems, that I had gotten so far away from, back in my life. So I changed my # and that was that.
I finally got over him. I am not sure that I'm over the things he did, or the hurt he brought to me, but maybe that will never completely go away. But as far as him - I know I don't want or need to be with someone like him.
The weird thing is that the biggest part of me wishes he had never contacted me and wishes I hadn't let him in my life for that short time. The smallest part of me knows that had he not contacted me, I wouldn't be over him now, but for some strange reason, the biggest part of me still
wishes I hadn't let him back in my life. Maybe because I tried to spill my heart to him during that time, and now I feel we've just left it go, so he probably thinks I am sitting here still crushed over him. I never told him different, I just walked away. I guess it feels had he not come back, he would have never known how much I struggled when things ended. I'm not really certain. This may not even had made any sense to you. (I'm not sure it makes sense to me
So as for your situation, I think only you can determine what will be best for YOU
. You know best what you can/can't handle, but my advice would be that no matter what choice you make, be prepared for it to not
go the way you may want or hope or believe. I guess that's what I would say I learned out of it.