Crushes

Has anyone got any advice on getting over a crush I've liked someone for 3 years now and Ono that nothing will happen so I'm just trying to get over him now. We were In the same class for three years and spent one week working together some work experience thing earlier on in the year and we didn't talk Altough we talked for a while on the Thursday and Friday before we even hugged like 5 times over 2 days. I just really need advice