My classmate is into me and idk what to do

So i have this classmate and lets call him Gabriel. Ive known him for 4 years now. And like a year ago he started liking me. He didint tell me but i know myself that thats true. So my friend had a crush on him, but now she says she doesn’t and that i should go for it. Recently like 5-6 months ago i started chatting with him on snap. And it was pretty casual, until he “confessed” his feelings for me. Now, what do i mean when i say “confessed”? I mean that he didint say it directly, but he was calling me beautiful bought me drinks and so on. One time we met up in a local shopping mall and also my friend tagged along. And i can tell you the vibes were not vibing. You can say that it was super akward. So after the meetup he texted me asking when are we going to meet up again. And at that time i was on my period so naturally i didint want to go, but also i still wouldnt agree to meet up and would make up an excuse. Dont ask me why, im just a little bit introverted. We then proceeded to chat for like a few weeks when my other friend mentioned that her friend likes Gabriel, so i told that she should shoot her shot. Then i told Gabriel that someone likes him. And i wont go into detail, but then we stopped chating for like a few months. And like a month or two ago he texted me apologysing. I honestly didint know why he was doing that, but anyways. We started chatting and then i asked him why did he suddenly text me again. And he said “because i like you”. I said that i didint really like him back. But he still wanted to chat with me so we did. For a few days we did. And then he said “look what my friend sent me” and it was an ai video of me and him kissing. I was disgusted and told him and that friend off and unnaded him on everything. Everything was quiet until last week, where he added me on tiktok. He still hadnt said anything. I forgot to mention how i feel abt him. So for context he is tall, athletic ( plays basketball), with brown hair. So you can say that he isnt bad looking and i agree. But theres something that just throws me off so much and i dont know what. Maybe his voice, maybe the way he walks. I dont know. It just gives me the ick. And i dont know what to do. I need yalls opinions on what i should do. Am i the bad guy of this situation?

P.S sorry for my grammar mistakes, english is not my first language.