I don’t know what to think it’s small but idk 🤷🏼‍♀️

A while ago I liked this boy (call him z) and we had something but it ended cause of an argument and he kissed someone else, I started to like him a while after and I’m currently getting over him. Anyway today at lunch some of my guy friends came over to my table and where chatting to my friends and i then left and went outside, but as soon as they where walking past he was watching them (could mean nothing). Then in supports study my teacher was holding the class and she kept chatting to me and my friend who could see him said he kept looking at me and semi giving me the eyes. I mean it’s probably nothing but I’m just really confused cause it’s a bit strange, Amy help or ideas??