“I am an attractive young female with the biggest crush on this guy. The only problem is he has a gir asdfadsf ”

I am an attractive young female with the biggest crush on this guy. The only problem is he has a girlfriend. I am pretty independent girl who usually is confident single but I really feel that this guy is right for me. My friends tell me to forget about him and focus on other guys. But I can't. I'm graduating in the spring. We may never see each other again. Help please!