Me and my gf (25M, 22F)were out last night (we are newbies) she didn’t want either of us to be with the opposite sex as we’re new to this, she wanted her to be with another girl basically. We talked about what may happen at a club like this and she said we will just see what happens. Well we were there and met this couple that sat down with us on the couch upstairs, they told us they like to just go with the flow, I did tell them what we were looking for up front. The other girl and my gf started hitting it off and the other girl became pretty touchy (she was grabbing my hand trying to put it on her leg which I whispered to my gf about, she said no ) then the girls started making out, right after the other girl started kissing me and being in the moment I did not stop her immediately but knew right away it wasn’t right and that I only wanted to be with my girlfriend. Now of course, my gf is hurt by this. I feel like she doesn’t feel the same about me and never will. She hasn’t said these things, but I can just tell she’s very upset. I’d never go behind her back and cheat, this is something that happened with us together and we agree this lifestyle is not for us. I should have pushed the girl off right away but it just the situation. Any advice about this guilt would be much appreciated.