Crush

I'm currently 14 and have had a crush on this dude since basically kindergarten. We have always been friends. For years I've seen him go through relationships with girls. A couple month ago he found out about me liking him and now we are friends😏 but anyways now he has a gf and I have come to the realization that I think this whole time I've been in love with him. The problem is, I'm not his type. I'm plus size and he like slimmer girls (no offense)  but it's gotten to the point where all day I'm thinking about him. What should I do?