Boy problem

I’ve been in love with this boy for seven months. I started crushing on him really hard back in December when I was on the girls basketball team he was on the boys basketball team. We hung out a few times together and I had a really good time. We made out one time and I told him that it was wrong because he had a girlfriend. He told me he didn’t care. I sort of brushed it off and just kept going on with my life at school. One of the problems is is that I still care for him and I still love him. The other problem is that I don’t know how to tell him how I feel about him. He’s also going to college across the country. He will be a freshman in college this year. I’m going to be a junior this year in high school.