That's rough, dude. I knew I was fucked up but kept faith hat I would eventually find someone I could be honest with. A lot of my classmates thought I was gay but of course they couldn't even prove that, since I never 'did anything' with anyone. There were plenty of students that turned out gay but I was on another level of lonerism.
I don't want to come across humble-bragging of judgmental, but I do have a gf now, one I've had for a few years. I met her in college, right after the point where I'd completely given up on relationships. I had resolved to just die alone and focus on my work, and out of nowhere, here comes this girl.
I tried to be honest with her about my inexperience, and eventually, I was able to force myself to confess to her what I was into. She was completely sympathetic and basically said "that must have been hard to say", or something like that.
I say this because there are grills out there that will 'get you', you just have to try to be honest and find someone you're friends with first and attracted to second. My gf isn't into what I'm into but she does it for me and is turned on by knowing that it turns me on.
That said, if you're happy as-is, again, I'm not judging, but if you do decide to put yourself out there, it's nowhere near as bleak as you think it is. Best of luck either way.