
Sometimes it’s more fun going with a group you like if you could suggest that, so you have other friends to talk too. But if it’s just you and him, I’d say still go even if you don’t really like it. You can always ask questions if you don’t get the sport either, most guys are happy that you ask what the games are about
Do you bring up the fact that you hate sports games every time he brings them up? because in that case, you need to be more accommodating of his interests. if he started talking about how he hates one of your interests whenever you brought it up, you probably wouldn’t want to bring it up either
did he start going to more games after you told him you didn’t like games? because in that case it might be time to investigate if he’s doing it on purpose to get a rise out of you or if he’s using going to games as an excuse for going out by himself when he could just communicate that he needs alone time
if he makes time for you then there shouldn’t be a problem with him doing his own thing. but if he’s not giving you the attention you deserve then the two of you need to sort out some sort of system so you can have couple time and he can have his time too. if that means going to games with him, then sure, but you shouldn’t have to be forced into doing something you don’t want to do just because he wouldn’t make time for you in the first place