I would dump him because That is not love. When you love someone, you would do anything to protect him/her and not risk them of deseases out there

I can say from experience, to have your loved one cheat on you, it's Devastating. When it happened to me, I just walked off, and didn't pay attention to the her for a long time. I really don't pay attention to her now either..

I guess you would have to pay attention to how your relationship is and why they did it and how they feel about it. if they don't care then dump them quick. i had a thing like that happen to me except i was the one who kissed another guy and you won't believe how bad i wanted to take it back. but he left me for some other girl and it took me over a year to get over it. just talk it out. don't listen to your friends because its between you and them. and do what ever you heart tells you.