The Dumpster Fire Within

About six weeks ago, I started dating the nicest guy. I have some intimacy issues (basically, fear of abandonment), and having somebody be nice to me is new and uncomfortable. I freaked out one night and had sex with somebody else. I know this guy I'm dating isn't sleeping with other women, but we haven't had the official talk. I don't plan on doing this again, but I really want to confess. The guilt is terrible.

--Disgusted With Myself

The only man in your life with whom you should be...