UncleverName saidI regularly read another forum (musclegrowth.org) where there are a number of men on there that really like muscle, but still identify as straight. They might even get off on muscle, but don't want to have sex with men, and enjoy sex with women.
When I was younger, I thought I was one of those guys. From puberty onward, I was turned on by male muscle, but I was not at all interested in having sex with a guy. I didn't try it until much later, in my late twenties. Now, of course, I know there's nothing better.
So, not to project or anything, but I'm sure there are other guys out there who love muscle but haven't figured out yet that they are gay (or bi). But not everyone can be so easily categorized.
I read that site occasionally too... good stuff.