A Night of Uncertainty and Desire

I’ve been in this open relationship for years now, but lately it feels like I’m starting to blur the lines between what’s okay and what might cross a boundary. Last night was particularly hazy, we had another couple over at my place, and it got pretty wild. We were all drinking heavily, laughing, and joking around. There came this moment where it felt like everyone understood there was no shame in exploring each other, but I couldn’t help feeling guilty about the intensity of the attraction I started to feel for someone who wasn’t officially part of my setup. It’s not like we did anything that broke any rules, really, it was just a bunch of kissing and heavy petting in the midst of everyone else doing similar things, but it’s lingered with me all day today. What does this mean? Am I cheating on anyone if there were no actual vows to break? I’m still grappling with these feelings, trying to figure out where my heart truly lies.