Not feeling sexual attraction toward my boyfriend. Could I be asexual?

I’m feeling confused about my sexual feelings toward my boyfriend. We’re both 19 and we’ve been together for 2 years. At the beginning of our relationship, we tried oral sex, but I absolutely hated giving it. It was okay when he did it on me, but I had a really hard time finishing, and so did he. I’ve realized that I really dislike giving head, it just feels gross to me. Lately, I’ve also started hating making out. It feels kind of disgusting, and I just don’t enjoy it. I sometimes just force myself through it because I don’t want to hurt him or make him feel bad. I’d much rather stick to hugs and cuddles.

We’ve never had actual sex, partly because we were both kind of nervous. But now, I don’t want to have sex with him at all or do anything sexual with him. For some reason, he doesn’t make me feel aroused anymore, and whenever he tries something sexual, I start feeling uncomfortable or even disgusted, so I tell him I’m not in the mood. This has been going on for months.

The only sexual activity I enjoy is masturbating, but I do it alone. I don’t think about him when I masturbate, I usually think about women or watch lesbian porn.

Don’t get me wrong, he’s an amazing person and a great boyfriend, and I love spending time with him. I just can only do non-sexual stuff with him.

I’m starting to wonder if I might be asexual. Has anyone experienced something similar? What’s going on with me?