I know I'm not but just really need to get this off my chest.
I am a single woman who enjoys sex and partakes in the occasional one night stand.
Last night I ended up sleeping with a friend of a friend who has a girlfriend and a child. (He said they weren't really together but I was under no illusions)
I was drunk (too drunk really) it was crap sex, I feel horrendous for being so selfish and utterly mortified if my friend finds out. On top of this I'm panicking that I may have an STD of some sort (I feel like I've got cystitis).
I have honestly never felt so shitty about myself.