I had to break up with my boyfriend because we had to go to different schools and I seen him before but my sister's friend told me that he wanted me to know that he still has feelings for me what should I do

Well that depends on what you want to do. Do you have feelings for him? Are you to far apart to make it work? Fill us in more.

If you still have feelings for him, then talk to him and see if you guys can work things out.

If you don't, then leave him alone so that he can heal from the break up.

Is this high school, or college?