my friend need some advince from you guys :)

The adult thing to do is to sit her down and tell her that he saw her and ask what is going on. What some people do is ask what happened that night hoping she would tell and when she lies they get more angry! So tell him to go to her and talk it out.

They did kiss, you mean kiss on lips? if like that i will be so angry i will leave that girl immediately, i don't need any explain about it more because all what she did already means it...

He shouldn't waste his love to that kind of girl, i think your friend bumped a wrong girl..

..hai kyrie.. ounch..sometimes we,(guys) in this kind of situation we can't think properly, we bearing us in anger, and it cause trouble..maybe, if I am your friend, i should appear in front of them, and say thank you to that ex of my girlfriend, for showing me what kind of gurl my girlfriend is..then leave and i don't pity to forget that kind of gurl. nice day ahead

I will just simply go near them. I will ask the girl like this... "Hi there, I think you are missing something. Is he your new boyfriend now?"... If she will say yes, then that means that girl never deserves your friends love. If she will say no, it means she lied then he must let her go.

if i was your friend, i would ask to see whether they intend getting back together or if they were harmlessly dancing and kissing as friends... I mean i still occassionally dance with my ex and i kiss her on the cheek when i see her, more to show my son that his parents still get along even though we are divorced. If on the other hand the kissing in particular showed that there was more passion involved than a simple peck on the cheek, then i would definitely be asking questions.. Not accusing or shouting as this is the worst thing you can do... But calmly discuss with the girl that you saw her with her ex lover, and that they were dancing and kissing and was there anything in it. You can tell be the way they reply whether they are telling you the truth or not. It is definitely time for a serious talk and he may have to face the fact that it is time to find someone more faithful to him... But find out first

it's hard to put myself in your friend's situation. I mean I imagine how it must feel to see the person you love in the arms of someone else. Now what I would do...I would probably burst into tears and than I would go talk to him. I don't know if I had the courage to do that there but I would definitely talk to him at home. and in the end I would simply end the relationship as he doesn't deserve me to love him

leave it out, there are many other women. And maybe he does not love again with you

Well... if I was the guy, I'd dump her because she is fickle. Honestly, I hate fickle people. I admit it's one of the negative traits of girls (I'm a girl, too.) But then, I've made up my mind every time I get into a relationship. I take relationships seriously and if the other party isn't serious about me, then to hell with that person. :)

Now if its harmless danving I wouldn't see an issue. But kissing it depends on friend who told me. the If we were close I would believe them and question the girl about it. Bumoslikely dumb her to find someone who appreciates and wants me.

Once a cheater always a cheater! Leave and don't bother, there's no such thing as love it's all just chemical reactions in the brain. Tell your friend he'll get over the girl in a few months and that he deserves much better. Never settle. You deserve what you settle for.