I was married to a great woman for a number of years. She was well aware of and quite supportive of my attraction to men and for a few years we tried a relationship in which I'd have safe, non-attached contact with guys. It worked for a while, especially for me, as I allowed myself to enjoy it and not feel guilty. After a while, she realized it wasn't really working for her. We eventually got divorced while remaining close friends, and we've each remarried wonderful men.
It's "natural" for some of us to want to marry a woman and have kids (definitely not natural for everyone, and certainly not for most of us here). I really enjoyed being married to a woman, and being part of the whole traditional (well, maybe for us it wasn't entirely traditional) family culture.
Had same-sex marriage and same-sex couples raising kids been as big and accepted part of the culture in 1985 (when I got married) as it is now, maybe things would have been different. But maybe not! My inner life and sexuality? It's complicated.
Kyle, you were quite clear--you love having sex with women AND being with muscular men (and I'm deducing/projecting that you either jerk off while exploring/watching or the other guy jerks you off while you feel his muscles, both of which I've enjoyed with muscle studs). You may find a woman who is cool with that. Life is interesting.
Years ago I met another married guy in the small town where I live who wanted to explore his attraction to men. His wife encouraged it, especially because she had a thing going with another woman. He, sad but not surprisingly (especially 20+ years ago) was so conflicted he couldn't make it work for himself. We met once. A month--a month!--later he called me to say he couldn't see me anymore because "our relationship is taking up too much time and I need to be with my kids." Well, it was his obsessing about the possibility of a relationship that took up the time--we'd spent maybe an hour together, once. He's never, ever, made eye contact with me or returned a smile in the years since. (In a small town you can't help but run into just about everyone from time to time in the supermarket or, when our kids were kids, school functions, etc.).
I always thought his wife would have had an easier time if he'd just found a guy to have sex with and accepted himself. There's another guy I know who seems happily married in many ways. Loves his wife, kids, and grandkids. He used to hit on me all the time, until I married a guy and told him we were monogamous. He says he and his wife hadn't had sex in many years, and that she says she doesn't like it (which is not surprising, knowing him). She looks the other way, and they have an older-generation don't ask, don't tell sort of thing going.
Not optimal, but couples find their own ways of adjusting to realities.
You, Kyle, may well find your desires and comfort level evolve overt time, which is also quite "natural!"
And I agree with everyone who has said there's no need to label yourself. Letting go of labels is freeing. You are who you are.