Confused

Hi , I basically liked that guy for more than 5 months and thought he likes me back , he is always teasing me in class but since his popular I thought that he was like that with every other girls . But then he started talking to my friend and I went to class with my homeboy and he said “ what happen between you and …” I was like nothing happen since y’all were the one shipping me with him , then he was like “ he liked you “ and I was like no he didn’t why would you say that. Then he was like “ the way he’s teasing you and stuff “ and I was like teasing someone doesn’t mean you like them and he was like “ yes it does “ then a week after him and my friend started dating , but like I’m trying to get distance cause I don’t want to be involve in any drama. But like it’s like everywhere I go they’re. Hugging in the hallways , hugging again and again and that happen in front of me sometimes I wanted to cry so bad but hold my tears , but like he’s still teasing me sometimes but since he has a girlfriend now we are not talking and be much comfortable as we used to , but I feel like I messed up…. What should I do now ?