TIFU by telling my online buddy I'm a girl

I'm so mad at myself. I started playing a new game recently and met a more experienced player. He'd been guiding me a little and showing me how to play. He came across super nice and never got off topic from the game. So I absolutely should have lied when he asked if I was a she. I've literally been through this before where I make the mistake of thinking it won't be a big deal. But now it's pretty clear he wants to be closer. This dude doesn't even know anything about me and we are on separate continents but he's acting different. I feel gross too because I'm 18 and the more he tries to talk to me, the more I get the feeling he's probably like 16 based on the bit I know about him. Conversations going from how the game works to little details about his life feels icky as hell. It feels like it's only a matter of time before the "hey can I tell you something" message happens. I do not know you, you do not know me!!! I personally have had bad experiences with people being creepy online once they've learned I'm female, but now I'm pretty sure I'm the older one. I just wanted to learn about a stupid game. Now I feel weird and mean and also slightly hurt that he's started acting differently, but mostly gross.

TL;DR: I told someone I know from a game that I'm a girl. Now he's acting a little too close and I feel like a weirdo.