Feeling uncomfortable around my friend who likes me (arospec and acespec)

My friend likes me. He asked me to date him, and I told him no, as I didn't have feelings for him, or didn't think I did, and wanted to focus on figuring out my identity. He kept being open about the fact that he liked me, but sometimes his attention goes from flattering to... uncomfortable. I can't think of the word I want to use right now. At a school dance, I said I was hot (I can't remember if I was actually physically hot or making a joke) and he replied somewhere along the lines of, "Yeah you are." He's said similar things several times now, and it's a little flattering for me, but almost feels weird sometimes, and makes our conversation awkward for a moment even if he's saying something non-sexual, such as telling me I look pretty in whatever outfit I happen to be wearing. At that same school dance, he kept pushing to kiss me. He claimed it was a joke, but I could tell he wasn't really joking. I think he even said something about wanting to make out with me. At one point, he grabbed my arms and attempted to pull me onto his lap, and he succeeded in making me lose my balance, so my upper body was on his lap and my face was kind of pressed against his torso. I tried to squirm away, and I acted like I found it funny, but I was really embarrassed and even ashamed to be associated with him at that moment. I finally told him that I didn't like him the way he liked me or want to kiss him, and he looked really crushed and accepted it. A couple weeks later, I mentioned that I was pretty much aroace to one of my other friends while he was standing beside me. I know he heard, but he hasn't changed his behavior at all since. I'm almost 100% sure he knows what asexuality is, at least, since he thought he was asexual a few years ago, but he hasn't changed my behavior toward me since then. I know I sound delusional saying this, but he doesn't have any ill intentions, I'm sure of it. He's always been socially unaware, and I think he just doesn't know how to express or process his feelings toward me very well. I've done similar (although less extreme, in the case of the dance) weird things, in the few instances on which I've felt romantic or sexual attraction.

Extra notes:

-He's trans.

-I'm a cis female.

-We've had a bit of a romantic history in the past.

-One of my friends feels like he's creepy.

-I'm his best friend. He tells me things about himself he doesn't tell anyone else.