I really think that I'm not bisexual

I think..

I think I'm gay.

I'm dating a guy, yeah, and I love him. But something honestly feels missing. I don't want to break up with him and.. well

I don't know how people would react. Scratch that. I don't know how my PARENTS would react. My mom's reaction to me telling her I was bisexual was.. concerning to say the least? I meant she seemed pretty skeptical. What if they get mad? What if they just tell me it's a phase?

Is it possible to love someone of the opposite gender.. but still be more attracted to your own?