Me and my boyfriend are each other first and have been having sex since December. Last night be started to have sex for the second time that last night (as in we had done it earlier in the day ) and I just couldn't do it. It started when he started kissing on me. And it just felt like a "blanket of guilt" came over me literally. I shivered while he was kissing on me. And it Made me tense, during sex. I wanted to enjoy it but I couldn't I was so tense it started hurting. I just don't know what happened. I told him I felt guilty and he was like we always have sex.. Which is true. He wasn't mad or anything.