how to get over a high school crush? (for gay teens)?

[Adorableboy]

Hey i'm a guy and dated this other guy for about a week. A really fun week though filled with teenage love and hot school bathroom make-out sessions. But one sunday while we were at his place he broke up with me claiming he wasn't ready for a bf. The day after we broke-up was a monday and during the school day i saw him flirting with some girl. Angry and jealous i told people in school he was bi-bi-curious or whatever....flash forward a couple of months later, me and the guy still never talk, he has a gf and i had plenty of bfs but he still stares at me in class all the time, Then when i stare back he looks away, then stares again. We've had minor convo's by text in between the break-up and now but most of them were arguments (he wasn't very happy about me telling people about us) but besides that we haven't talked about much until today in bio class he started a random conversation about my back-pack. I believe he's single now, and so am i for the most part. what i wanna know is how i can i tell if he likes me still and if not how do i stop wondering if he does like me?