What do I do?

I feel bad for making this but here we are.

There's this guy in my year at school that I've been hanging out with more and more recently, and a couple months ago he told me he liked me. I sort of liked him at the time as well but I wasn't sure enough of my emotions so I told him I didn't like him back, but we stayed friends. Last weekend he and some friends were at my house and we were drinking, me and him ended up lying on the floor in my dining room, drunk and holding hands and laughing for over an hour.

We talked about it a couple days ago, realised we both liked each other. I was so excited but now that initial adrenaline rush has passed I'm not so sure this was the best idea. I feel so on edge when he sends me romantic texts or reels on Instagram or talks about maybe dating, and this has happened in the past with other relationships but I thought this would be different? Apparently not 🙃