Search Results: making a guy chase you

So generally, I'm not sure if I'm that good at knowing if guys like me or not, so I was just curious about how my thoughts compare to those of others. Anyways, so I'm a competitive swimmer and recently there was a training camp for a big meet. So there was this guy that joined this year but I haven't spoken much to because he is in a lower class. However, camp is less segregated so we saw each other a lot more. I wasn't that friendly with him before, but during the camp, he starting talking with me a lot more and making jokes and all. He starting following me on instagram. And then one time during the lunch break, one of my friends stole my phone and he got up and helped me chase her down to get it back (I didn't ask him to help, he just did). I feel like that is sort of a kind of protective, show off, hero type thing guys try to do when they like a girl. Over camp, I just started getting the feeling that he liked me. But then at the end of camp I learned that A. he has a girlfriend (of a month at that time), and B. he actually a few years younger than me (he's 13 and I'm 16 (also I know my profile says I'm 18, but I lied there)). I mean he's still in middle school and I'm in high school so that's a big gap at our age and he seems to really like his girlfriend. But then again, middle school relationships aren't really that serious. I don't know. So, does it sound like he liked me or was I way off?