Am I crazy or just a bit.. stalkerish?

Okay. Sunday, I was on the bus on my way home from this music festival. I was flirting a lot with a guy and he was flirting with me as well. we didn't talk though, but he was so hot and I can't stop thinking about him. i heard his friends call his name and i kind of found him on facebook. i never add people, not ever the ones i know. never. but i really want to add him and i would feel like an idiot/stalker/creep if i added him but he is crazy y. i sound very very sad right now, but here's my question? CAN I ADD HIM? please...... help. i'm dying over here. er.