Or if you want something shorter with fake dating and friends to lovers I'd recommend My Faker Rulebook but it has way less focus on the sport aspect (one of the guys is an athlete but we only see that in the beginning). The guys are fake dating at a wedding because one of the guests is one of the MMCs' ex (he should feel jealous and bad with himself)

Or they's always the Westbrook elite series though only four books are mm romance. These books have swimmers, one of the best found families I've ever read and they don't have a third act breakup. In terms of writing and style I wouldn't say they're my favourite books but if you want something with plot that is also sort of predictable in its love and sweetness they're good choices.

But all in all my favourite from this list has to be "Him"

I think I'd recommend "Him". It's a duology (though the first book could be a standalone too). The main characters used to be best friends at hockey summer camp and then something happened (not something bad but I don't want to spoil it) and they stopped speaking for the 4 years of college. Then during a very last year of college their two different college teams are playing against one another and that's the first time they've seen each other since the camp. Then they both volunteer to coach at the summer camp (West who's the gay one sort of surprises Jamie) and then their friendship is rekindled. And Jamie realises he's bisexual while falling for West (West has been in love with Jamie for years). It's cute and fluffy but at the same time there's some spice (though not that much) and it's so wholesome with it's funny scenes and banter