Heartache for a stranger?

Alright, I went out with my friends today. I am not the going out type, I never had a boyfriend, I spend my time digital drawing and watching anime. But then when we were walking around, one of my friends found one of their guy friends.. I tend to be really shy with guys, I always look away try not to look at them properly. I caught him making a few glances at me, I did glances back too. I was interested to know him better, I never had close guy friends, I only talk to girls mostly. Suddenly, my friends started to mock me, saying that I liked him and heard it.. I was saying to him : don't believe them!!" and I was embarrassed to say that. But we got over it at the end f the day and said bye to my friends and even him. I thought suddenly, will I ever see him again? .. When I arrived home, I had an heartache.. And it felt like I wanted to get something off my chest.. His smile is replaying in my head and I don't know..it sounds stupid but I can't stop thinking about him even though I just met him.. I tried checking for his Facebook but it looked like he didnt have one. I NEED to see him again!! How can I without giving my friends a clue that I like him? I'm not even allowed to go out on my own at all!! My parents are overly protective, really!