About 7 months ago, this guy friend of mine asked me out. I said ‘no’ because I was really into someone else, and I was very stressed and busy with school. We remained friends however, and I was happy for him when he started dating someone else about a month later.

Now, however, I am starting to have feelings for him, but he’s still with the other girl. Also, even if he were single, how could I go about letting him know that I’m interested, since I already rejected him once?