I'm only friends with one of them. Another one got even weirder o_O so he and I don't even talk. He's not really friends with any of his exes, but that's their own fault. I've gotten so much trouble from girls who liked him in highschool though

Nope. I have tried to befriend them even long after the relationship ended. It was always the same thing, they either wanted to try again at the relationship or wanted some type of fwb deal. So, I don't even try to be friends with them anymore lol....Once we're done, we're done lol....Plus, I'm sure the current person I would be dealing with would prefer that.

I think this all depends on why you broke up. My ex-gf broke up with me as she didn't want to keep doing a long distance relationship and wanted to let me find happiness with someone new where I moved for work vs potentially moving back and taking a job I didn't enjoy just to be back where she lived. We have stayed close friends, we still chat regularly, and I would still consider her to be one of my closest friends. We'd discussed an open relationship vs breaking up; however, she figured I wouldn't actually seek out anyone new if we did.

I have been open and honest with my current girlfriend about the fact I'm close friends with my ex-gf. And maybe it's helped by the fact the ex lives so far away but there haven't been any real issues with jealousy... I also don't hide what I talk about with my ex from my current girlfriend either. But I tend to try to be open about all things with those I'm in a relationship with as good communication is the key to any healthy/good relationship.