I've been with my girlfriend for nearly six months now. I've always had a bit of a problem having sex with people (keeping it up) but this problem has never occurred between me and her. However, lately I've begun to feel very guilty about the physical action of having sex. The act of penetration is a great experience physically, but when I think about what I'm doing I feel like I'm stabbing her, or performing some kind of violent act on her. We haven't had sex yet since I started REALLY feeling like this (which was a little more than three weeks ago) but if we are making out and begin to have dry sex I often start to cry from the idea of what I am doing to her. She's very compassionate and understanding, and I have told her all of this, but I want it to stop. I need to know how to make myself stop feeling like I am abusing her when we have sex because considering the times we've had sex before I had this mindset, it's been an incredible experience of expressing our love to each other, and I'd really like to have that back.

I’m eighteen, and I’m madly in love with my boyfriend. We’re supposed to get an apartment together in December and I feel like I could spend every day of my life with him. I’ve been with a few (ok, 6, or 5, depending) guys before, and one night he got trashed and told me he would never marry me because I’m “dirty and used”. In the morning when I asked him about it, he said he didn’t mean to be that harsh, but in all honesty, he won’t ever marry me because I’ve slept with too many people. What the hell?