How do you react when you see your exgirlfriend ?

I think you're right, it is better to talk to your exes and be in a good relations, but sometimes this is hard, because of the things that happened between us can become very complicated. Sometimes if you pretend that you don't know them can make you look immature or look like you didn't get over her. But like you said, it wont hurt to say hi.

Well, at start I pretend like I don't see her, we've got an eye contact and that was awkward, but as the night was going and we take a few drinks we've had a little chat so the awkwardness was gone. Oh and something weird happened and I don't know how to perceived that situation. We were in a large room with a very big table even though it get very smoky and muggy, so we opened the windows and it get a little cold. I left my jacket somewhere I don't remember exactly where and I get cold and start looking for my jacket and then I saw my ex girlfriend dressed in it. That was really weird and I come to her and she told me "That's your jacket right?" and I said yes, then she told me that she was very cold so I left my jacket to her. At the end of the night she gave it to me, then she left. I don't know how to read this situation. And about my other ex - well with her is not that awkward because she's not exactly my ex - me and her hooked up together for a one night stand and before that we weren't even talking to each other, we aren't talking to each other now too, but the eye contact is always awkward. And about that thing with the jacket what do you think was that ? I think that it was inappropriate for her to do that and I don't know how to read this situation. Any help ?