So me and my bf and my best friend all got drunk and had a threesome .. Never thought I would do it but just had a baby, hadn't drank in a long time and my bf works nights sex life wasn't too exciting and it just happened .. But anyway I realised he wasn't wearing a condom and then he came inside her from that point I had made it very clear I no longer wanted this to continue and we all stopped and l got dressed .. After that I go to go to the toilet and I see my bf having sex with my best friend on the bathroom sink.. Would you consider this cheating?