The wise thing to do is to dump her in a hurry. Get out now before you really get hurt. Just my opinion. Lets see. You're honest with eachother. She said she had food poisoning but was really drinking instead. You catch her in bed with her ex-boyfriend. Then she tries to spin the blame on you? Doesn't sound too honest to me. You feel betrayed and hurt. And now you're messed up. Bad deal. You don't need that crap. She'll only pull you down.