her boyfriend is pretty alpha, a role model for my own pursuit of it even. Also the host.

everyone's having a good time, we hit a club after dinner (group gets cut in half here; still majority are girls so probably some subconscious competition going on here).

while dancing with hosts girl (+another girl), she leans in and says "you're cute.... we can hook up.... do you have my number?..." + subtle kiss. I'm like hell yea girl I'll hit you up (on facebook, wanted to keep it lowkey but in hindsight I wish got that number)

boyfriend may have done something to piss his girlfriend off (with another girl, much younger, who he has a history with).

She didn't seem noticeably jealous.. at all, throughout the night.

there isn't a followup here with plausible deniability is there? guess I get a test of my moral compass; shit sure as hell didn't bother me when he was in the same room, but girl was just the type I'm thirsty for right now and cuckolding a guy gets me off.

So, sure, I could have abundance mentality and forget this happened.. but I could also follow up and have a plate I like for lots of reasons not mentioned here (who can't escalate the expectation of commitment very easily).

The deception totally contradicts the stoic idea "align action and thought." The act itself fits it perfectly, just saying. Casual sex at all is pretty anti-stoic, but considering that limitation was written in the context of a society where slavery, and sex with those slaves, was a social norm.. I think a little casual sex is the modern equivalent. The cuckolding, though, cannot be justified? But I would not consider him a friend in the stoic definition (open declaration of bond, open unreserved communication). Definitely an acquaintance, but in fairness, I'm the one who wouldn't be judged deserving of friendship, because I would fuck his girlfriend.

Moral and practical advice both acceptable. I've never cheated/been cheated on/been friends with an eskimo brother, regardless of whether he knows we're eskimo brothers or not.