I have a problem

It’s not a huge problem but my brother is 25 and he has a friend who just turned 26. I’m 18 this guy has known me since I was a baby and now I have this major crush on him people think he has a crush on me to because of the way he acts around me and we just tease each other all the time. He texts me every now and then but not much at all. The thing is I really just need to know how to get over him because even if he did like me it would never work because of my brother. Can you help?!?!