I've been with my man for almost three years, getting married this summer. But recently I've been thinking alot about having sex with my best friend, who's a girl... She recently got married, but since both our guys work all day we hang out at my apartment or their house alot. We've always been comfortable around each other and before she got married we would do sleepovers and get wasted and make out and it was seriously really hot but we never did anything other than that. Last week we were watching movies in their bedroom, just me and her, and we were literally butt naked under the blankets! We were laughing and being crazy as always, and we started making out!!! I haven't told my SO because he already doesn't get along with her, neither does her man with me. I want to just tell her that we should try it and not say anything to them, but I don't know if it would be considered cheating? I'm so confused!!