This one is probably one of my favorites, maybe because Chandler is… not.
Friends Season 1, Episode 6 (1994), “The One with the Butt.” The butt is Joey’s story, it has nothing to do with poly.
Chandler’s story does though! Chandler starts dating this amazing new Italian woman. He is then thrown when he finds out she is married. And has a boyfriend. At first, he invokes one of our Evil Poly Tropes, the Trope-Naming one that “Poly People are Evil,” specifically, deceitful for not telling him she was married when she agreed to go out with him.
Personally, I can see where he is coming from. I don’t think it’s evil, but I think it is important to let someone know you’re poly if you’ve decided you liked them. I generally open with it, but some people wait a date or so to let people get to know them before being scared off. But I digress.
Anyway, Chandler briefly comes around. He describes the situation as follows: “I get all the good stuff: all the fun, all the talking, all the sex; and none of the responsibility. I mean, this is every guy’s fantasy!”
This statement touches on another evil poly trope: poly is easier than mono, because it’s only about sex anyway.
However, as the relationship develops his enthusiasm fades. When he discovers she is still taking on more lovers he decides to leave. He wonders why he, her husband, and her boyfriends are not enough, implying that he is threatened by the woman’s exuberant sexuality. He could accept being the new guy, but was thrown off by a newer guy. He also briefly falls prey to the delusion that she could leave all of these other men to be with him, a complete rejection of non-monogamy. Sad times. Well, for Chandler I guess. I imagine that sexy Italian lady is still out there being a sexy Italian lady with way cooler men than Chandler.