Is it normal to fall for a gay young man

Recently i went onto a gay chat site just to see what it was like. I had always had a fantasy to have sex with a guy..with me as the passive partner. Thought about a guy taking me from behind..holding my hips..pushing himself into me. That was my fantasy and I never had any plans to take it further. Then on this site I come across this young guy..20 years old and he's from the Phillipines. Unlike other guys on the site, he was quite shy. Anyway we got chatting and exchanged emails and ended up doing a few sessions on Skype and I just seem to be becoming infatuated with this guy. He is slim and sweet and I just find him so sexy and now i am having fantasys of a different kind. I want to take him. I would be so excited at the idea of meeting up with him. I imagine him sitting astride me..being deep inside him and just kissing him and holding him and i know if he was in this country I would meet up with him and make love with him.No Question He just turns me on so much. I am 45 and have never felt like this before. Up till now i have considered myself hetrosexual with a fantasy about sucking off a guy maybe...now i just want this boy...I want to watch him suck me off..I want to give him pleasure and take him..Its driving me crazy...but is it all normal?