Confused about my sexuality

This is not an easy topic for me to write about, but I'll try my best. I am 23 years old. I spent much of my youth struggling with my sexuality and trying to figure out who I was. I went through many stages of denial and acceptance until I finally came to terms with being gay. I knew that I was attracted to boys much more than I was attracted to girls, so I was able to put that label on myself. Although it took me a while to get there and knew that I still had a lot to overcome with coming out and so on, I was at least satisfied that I knew who I was.

However, I would notice things from time to time that would make me doubt myself. Occasionally I would see a girl that I felt attracted to. I figured this wasn't that unusual and didn't think much of it. I also realized that I was only capable of developing emotional feelings for a girl. Outside of sex, the very thought of having a relationship with a boy was completely revolting to me. Recently I did some research and found the term "heteroromantic homosexual," and I thought this could possibly describe me. Also, I have recently entered into a relationship with a girl. I not only have strong emotional feelings for her, but I've noticed a level of physical attraction as well.

So now I'm confused all over again. Something I thought I'd figured out years ago turns out to be something I'm still not sure of. I feel that if I don't figure myself out soon I'll never be able to lead a full life. I've decided that I can't keep this to myself anymore and that I need to talk to someone about it. My problem is that I don't know who can really help. A psychiatrist? A psychologist? A counselor of some kind? I'm just very clueless when it comes to this stuff, so if you could point in the right direction as to where I can go for help I would really appreciate it. Thank you.