Who is the guy/girl you've never been able to get out of your mind?

1)me 17, him 37

2) He is the most intense person I have ever met. Incredible piercing eyes and just this personality that I can't even describe. He forever changed me as a person; he pushed me to become a person I never thought I could be. He protected me, molded and shaped me into someone who was worthwhile. I loved him so much I can't put it into words,but it's a different type of love than I have ever experienced. The problem arose when he wanted to pursue something sexual with me, and I just couldn't do it. I mean, he was incredibly hot, but I wasn't emotionally strong enough to have a friends with benefits relationship with someone I loved, and the age thing creeped me out too. It all ended up backfiring anyway, and he and I haven't spoken in 5 years.
3) I really don't know, we live in the same town again and I'm sure we will run into each other again. I'll probably freak out big time, no matter how much i try not to.