What should I do?

I have basically a crush on a boy I met thru my sister . We started off by talking on the phone , but we never met in person and till this day I haven’t met him in person. He wanted for us to be together but I didn’t think it wud work out at that time because he lives far from me. But I seem to have gotten a lot of feelings for him over the years and really want to be with him . And he told me yesterday which really upset me that he has feelings for another girl. I thought we were going to try and work something out because he said he wanted to fix things between us . But I can’t stop thinking about him I want to be with him I don’t know what to do .. Help me