Why would a guy sleep with my friend to spite me?

Anonymous

I have a boyfriend who I love to bits, but this guy who is my "friend" apparently liked me. I thought we were just friends because we WERE just friends, but months later he told me he wanted more and liked me the whole time. I told him no because I have a boyfriend and that we should stop being friends as I don't want to lead him on, but he then ended up sleeping with one of my best (female) friends. They slept together but later he told me he only did it to make me jealous and to make me mad. I'm not jealous of mad, but I'm mad he used my friend like that.

Apparently he was trying to talk badly about me to my best friend in bed, and she was having none of it.

Why do some guys do this? Sleep with a girl's friend (s) just to "spite" her or something?

Why would a guy sleep with my friend to spite me?
4 Opinion