Nightshade
Blonde to the bone
I'm not going to judge or formulate my opinion on the entire e-drama, but I know that being cheated on is about the worst feeling you can get in a relationship. Just don't fall into the trap of thinking it's because you've done something wrong or because you weren't good enough. It's because he's a sack of shit.
I can understand (not approve of, understand) kissing someone else. Kissing can be impulsive, it can be sudden and surprise you. It can be an outlet for other emotional needs that you may have. If you feel suitably guilty, a kiss can be talked about and dealt with. However, having sex with someone else is just inexcusable. You can no longer say that it "just happened" or that "it was all so sudden". Bullshit! Before you can have sex with someone, you need to go back to his/her place, get into bed together and take off your clothes. ALL THIS TIME you have the chance to think about it reasonably and back out. You have the chance to think, "what am I doing? Is this really worth it? Does the girl I'm with truly deserve that I do this?" - and all that time, you have the chance to say "no".
If you don't, it simply means you don't give a fuck.
I think this is a fabulous response.