Yeah, I remembered the scene when

And just 'cause a guy is enthusiastic about girls doesn't mean that he doesn't also play with guys from time to time ...

But there's never a hint he likes to play with the boys that way, but flat out canon he likes to play with the girls that way...

For that matter, most anime and manga guys who get slashed in fanfiction are canonically straight, and no matter how hard I try, I can never understand the appeal.