I don't know how i feel about being with this guy.... opinions?

So i am currently single, i am 14 and a freshman in high school. The guy that i guess i can say i'm talking to is 16, a sophomore and taken. I bet you all are already thinking i'm crazy for talking to a guy who's taken right? but hear me out. I've been talking to this guy since the beginning of August in 2013. We both have liked each other since we met. He saw me at my Freshman Orientation for school, and was astounded by my looks. He tweeted about me on twitter and said i was one of the prettiest girls in the school. He then found my twitter and got a hold of me, and it turned out we had the same off period in our 1st semester, so we got to know each other during that off period and we both started to like each other. Things happened, he met another girl, me and him stopped talking for a while, then it turned out that other girl and him didn't work out and eventually stopped talking. (they weren't ever dating) He came back and apologized for parting ways with me and we started talking to each other again. Eventually, we stopped talking as much as we used to and we just weren't as close anymore. He then found a girl and is now currently dating her, but he texts me and also tells me in person that he wants to be with me and wants to kiss me (we've never kissed each other yet) but he's dating somebody. I don't want to be the reason why them 2 don't work out, but then again we both really like each other and we still hang out with each other. Some advice/opinions will help? Thanks