Is it okay to cheat in an "open" relationship?
So there was this great guy I was dating throughout the summer. We broke things off in September because we were both heading to different universities for our first year. Niether of us really wanted to brake up but it seemed like "the right thing to do". So anyway about three weeks into university we couldn't stand being away from on another so I went to his school for the weekend, needless to say we slept together(which I thought was his first time)... even though we techninicaaly weren't dating. We spent the rest of the weekend acting like boyfriend and girlfriend even though we weerent dating. The following week I discover to my surprise he had SLEPT WITH A High school FRIEND only four days before my visit! Recalling the weekend before he had told me she had spent the night but also told me "all she did was lay on my bed clearly nothing happneed between us" so he out and out lied to me. What do I do? Hate him for it? Its not so much the sex I cared about since we weren't dating, but the lying hurt. Should I forgive him?