Did I [M] have my first threesome?

So my gf and I have talked about and fantasized about the idea of having a threesome or even some light swapping before. Never acted on it in anyway and my gf has never been with a girl besides a quick make out.

Recently we were attending a wedding at a destination resort. Seated at the same dinner table as us is this other couple, roughly the same age as her. The girl, let’s call her Courtney, I find attractive in a mysterious way. She’s very open and personable and her and my gf, who we’ll call Kristen, hit it off right way.

As the reception and party go on everybody’s dancing, drinking and having a great time. The 4 of us are taking shots and everybody’s getting along great. The reception ends and the party moves to one of the resorts bars. At this time Courtney’s boyfriend isn’t feeling well and decides to call it a night and she stays with the rest of the group. Kristen heads for the restroom and Courtney and myself are at the bar about to order shots. She orders a shot that has an ingredient that Kristen can’t have due to an allergy. I say “I’ll order something different because if I take that Kristen will get mad that I can’t make out with her”( in a sarcastic joking way) and I follow by saying. ( but if you take it you can’t make out with her either), again in a completely joking way). Her response is “well fuck I’m not taking it either then”. This gets my mind thinking.