Im crazy in love with an older man?

So one year I went on vacation with my family(out of the country) I was only 13 at the time and an older guy started talking to me at a feast, not in a creepy way just friendly but really funny. At first I was like whatever then I started to really like him as the days went by, we hung out almost everyday. I came back to america, we would call eachother I found out he was 28 which was crazy for me but I couldn't help it. I went back again two years later (I was 15) he was 30, we met again and I swear to u im the happiest girl in the world when im with him,when I first saw him again I cried I was so happy. But a couple days later he told me he had gotten a woman pregnant(his gf now who's 36) I was sad, but he wasn't my bf, we still always hung out, kissed ect, no sex though. The next year I went back again (16 at that point) same thing we would hang out all the time like a couple, and I would cry SO SO SO MUCH when we said good bye and on the plane ride back. I video chat with one of his brothers now everyday so I see the guy I love here& there I miss him SO MUCH and think about him LITERALLY 24/7. I can't stop thinking about him. Im 18 now going on 19 and my feelings are just getting stronger& stronger and I can't take it anymore. I can't do anything he has a son&lives with his girl..but he still asks for me/talks to me ect. But I don't know, I seriously just need some advice what should I do, no matter what I can't just" get over him" I've had serious relationships after but I can not stop loving him. I LOVE HIM SOOOOOO MUCH. Please help!