When my wife and I had been dating about 6 months, she was on the phone with her mom. Something came up about me watching sports and I heard my MIL say “I wouldn’t put up with that every night”. I didnt say anything but about a week later, my wife (then GF) said something like “most men don’t spend their lives so obsessed over ballgames and…” at which point I cut her off and told her I had always watched football, basketball and baseball year round and that wasn’t going to change. She got the message. We have our stuff we watch together now (crime shows, mafia stuff, Live PD) but we spend many nights watching TV in separate rooms. And we’re both ok with that.