I have been dating someone for over four months, which is sort of a long time. Before we started dating, he had a year long relationship with this girl but told me nothing about it. When she found out we were dating she went crazy on him for a little bit. I asked him if they had sex and he said no. I believed him because we are in high school and we are young, plus she is obese so I didn't think he did. I just found out two days ago that they were intimate. #1 I'm grossed out to the max and I don't mean to offend anyone overweight and #2 he lied to me. I don't know how to get over it but it's truly disappointing and I've lost all my respect for him. Please help me through this. I've been completely turned off and it's the hardest thing I've ever dealt with.