Am I Transgender or Lesbian

Relationship

I think I'm just.... I think I'm just going to, ugh, I don't know what I'm going to do.
All of these thoughts and feelings are just catching up with me so quickly and it is so unwelcome. I don't have the energy nor the patience to think things thoroughly and clearly anymore; ha, as if I ever did.

I got myself a boyfriend.
He's a nice guy I admit, his name is David. He's transgender. He's a sweet, sweet boy and I don't know why I don't feel it, it being the love or romance. Maybe it's because I haven't ever seen him in person. Because, fine, I admit, I "met" him over Instagram. But even then, I don't see how that would make me feel anything different. I mean I could, but I don't think it would.
We've FaceTimed once, we text every day, and we speak on the phone several times a week.
It's a little frightening, really, because there shouldn't be any (logical) reason that I wouldn't like him 'like that'. But that's what it is.
He's a perfect gentleman, good looking, quite quirky in the purest way, and still it doesn't stir up any feelings of romantic affection.
We've been together for almost two weeks, and been friends a month prior to that.

And, in some way, I think I know why I don't like him.

Simply, because,

He's a boy.

And I 'discovered' this potential reasoning when I was curious as to why I didn't see him as a sexual or romantic partner. After all, he hasn't had any surgeries to remove or attach any woman or men parts, and his mindset is what I like most about him anyways.
But I came to notice that, more than anything, that when we interact, I'm very cutesy. And it's not what I'm used to (except with authority). Not only not used to, but also what I don't enjoy. By nature, I'm more of a tomboy, kind of rough, and honestly? I've always been the 'ladies man'. Maybe not in looks, but always in personality, smell (my iconic Old Spice or Axe deodorant), and in mannerism, speech, way of comforting, and the way I care for girls.
I've always kind of been buddies with boys, we play the same games, speak the same way, compare different interests of women, and we talk about sports. Of course, so can women, but usually I try to impress them and am either distracted by their features, or they're into more feminine activities which is more often than not.

Simply put, I can't be all cute and adorable, it's not my nature. It's a Part of it, but it takes so much energy to be this upbeat girlfriend that he is simply thrilled to have.
And then, there's always, you know,
He's not a girl.

And I didn't even realize that this was an issue for me. That I didn't want to be a girl in a relationship, that I didn't like this, that I want a Girlfriend, that I want to protect and love her, that I want to be as manly abd boyish as I am without completely covering this about me and only giving a cute, adorable, sweet side. Which is draining to keep up, even though it's real. If that makes any sense.

The consolidating part of this all, is that I have not led him on and insinuated that I'm pleased with coming into a relationship. I have warned him that I like him strongly as a friend and didn't hold any romantic feelings for him. But he stated that he would really love to call me his, so I accepted while telling him that I don't like him like that but am willing to try.

Also, I don't know much about being in a relationship. So I'm kind of apprehensive about doing anything. Am I allowed to check out girls? Can I do a double take at a hot lady? Can I admire a woman's looks? Can I appreciate the feminine beauty and body? Can I flirt? I'm not sure. I've never been in a relationship before, I'm as virgin as they get, and I'm not too happy about this situation as far as it goes anyways.

Damn.

So, am I....
a lesbian?