Crush crazy!

Hi, this is my first time to this site, and i needed some advice. I went on holiday and met this guy, he is really good looking, no way would he be interested in me, but since i've been back, i can't stop thinking about him and it drives me crazy. We keep in contact and everytime i get a message i get so happy but i know that i have this major crush on him and he won't ever feel the same. I feel like a young teenager all over again but i'm in my early 20's and feel so silly! I check my messages about every half an hour to hour everyday, sometimes at night aswell and i feel like its becoming an obsession. Please help, any advice would be great. Thanks