Friend will be friends?

Screw that. If he disrespected you so much as to steal your girlfriend, I say screw them both. The only thing worse than a girl who lines up her boyfriend's replacement, is a jerk who breaks up his friends relationship so he can move in on the girl. If that happened to me, they'd both cease to exist in my world. I don't associate with trash like that.

I feel for you, honestly from the look of things, your relationship with both your ex girlfriend and ex best friend didn't end in a very good way.... You don't have any obligation to say hi to her or to greet her in any way. But if you choose to, that is also your right. Cause this situation your at is ahm, a double edged sword, if you don't say hi, they might construe it or think of it as you being bitter or that you're still holding a torch for your ex. And if you do say hi, it might be seen as you coming on to your ex again or worst yet that you're lame or stupid (pardon me please) for saying hi and forgetting what your ex girlfriend did. It's been a long time, a year you said. I suggest you look deep inside yourself and see how you really feel about the girl, your friend and the situation you found yourselves in. If you have truly forgiven them and holds no torch for your ex girlfriend then I don't see no reason why you shouldn't say hi to her/them. But if you know that you inside you that you haven't forgiven nor forgotten what happened, I think you should refrain from talking to her at all, as I've read in one of the comments, it would just bring bad memories.

i understand,so you relationship between your gilrfriend and you were going in worst way,so it wasnt functioning well.That's why your "friend" took advantage of the situation and stole your girlfriend. Now you see your girlfriend again,if i were you i would never talk to her again,it only bring me bad memories.

I don't know whether you are still interested but if you are really interested in your ex-girlfriend and she is not engage,why not? 'to err is human' go ahead and say hi who know what tomorrow is bringing just say hi to her go ahead.

thats really hard... that even though u already moved on memories would definitely stay... they say you can for give but wont forget... but if your ready to move on and would want to be friends with her again go and do so... but if u prefer just to continue your life "with out" them it would definitely your choice... just remember what ever that would make your self at ease and happy, choose that...