New crush...help?! (guys' & girls' opinion)?

The other day, I went to a fundraiser concert for my cousin who was in a car crash a couple of months ago. After the concert, my family and I met a woman who's son had played at the concert that evening. When she met me, she said, "So this is the famous Arianna!". My uncle and cousin had written a song about me, (the song title was my name), and apparently her son played/sang the song a lot. She started talking to us about him. She wanted for us to meet, so we went outside and talked with him. She introduced me to him and Viceversa; we exchanged glances and gave an awkward "Hi" and wave. She told him that I was the girl that the song was written about, and both her and my mom made a big deal about the song. We were both embarrassed; he had said to his mom "It's just a song" and I had given my mom one of my warning looks of: "Thanks, this is awkward/embarrassing." But I did find him pretty cute, and he kept looking at me. I caught him at one point, and held his eyes for a couple of seconds. My mom "requested" that he would sing the song at my other cousin's graduation party that was coming up, since she hadn't heard it since I was about 2yrs old (I'm almost 15 now). (He plays guitar). After they had talked, we said our goodbyes (I turned around and gave a goodbye wave to him, and he had been looking my way as I walked away), we left, and I had learned that he is 17yrs old. My mom also found him cute. I would really like to see him again, and get to talk to him. Do you think that I could have a chance, or do you think that he is a little too old for me? As I had said before, I am going to be 15 in September; he is 17, he goes to a Christian school in Washington, PA (I'm around Pittsburgh). If so, do you have any tips for me for the next time I will see him? He has a Facebook, should I friend request him, or should I wait a little later on? Let me know, please!!! Thanks for reading, I know this is kind of long! :)