It's rude to ignore your partner's family.
Steve is at his in-laws for Thanksgiving when his father-in-law says he's going to turn on the Dallas Cowboys game.
Steve wants to watch the football game.
Steve goes into the living room and watches the game with his father-in-law.
Steve goes out onto the porch by himself and watches the game on his phone.
Steve's father-in-law enjoys watching the game with Steve and invites him to go to a Cowboys game with him next year.
Steve's father-in-law thinks Steve is rude and don't send him a Christmas present that year.