Crush issues☹️

I have a crush on this kid in my class and my classmates are always telling me that we should go out because we would make a “cute couple”. I haven’t had no feelings for him but one day I posted on Snapchat something about “kiss,marry,kill” and one of my classmates mentioned my crush’s name there. Have in mind that I still Have in mind that I didn’t like him yet. But from that day on I started liking him and now every time we sit together, it feels weird for me because his cousin knows I like him but I’m scared for him to find out because every time anyone says we should date, he’s always like “Ewww no she’s ugly wtf” I just feel bad about my look but I don’t know how to feel anymore.