“I feel slightly selfish, but this is my second question.nI’ve been in love with the most amazi asdfadsf ”

I feel slightly selfish, but this is my second question.nI've been in love with the most amazing young woman for three years. We were best friends 7th-9th grade - I started to have feelings for her around then. In 10th grade we drifted, but I still have these feelings. I'm going to Tufts next fall, she's going to Yale. I want to tell this kind, funny, talented, and beautiful girl how I feel before she leaves, but we aren't as close anymore and I'm pretty sure she's straight. I'm curious - what should I do about these feeling?nThanks -nHopelessly fallen <3