Longing For Reason.

So there’s this guy that I’ve known for a few years. He was my bestfriends step brother kinda…My bestfriends mom was in a relationship with his mom..anyways..I’ve known him a long time. Very nice. Very quiet. We never really talked. Well tonight I liked his Facebook status, which lead to him texting me, which eventually led him to telling me how mature I am, how beautiful I am, how nice of a person I am… A normal 17 year old girl, hearing this from a 19 year old guy, would be in heaven..I on the other hand feel very claustrophobic.
I mean, it made me happy and I flirted back..but I know I don’t want it to go anywhere. I’ve only been single for 3 months, and I’m content alone. I don’t want to start something and end up hurting him.
Ugh. The complications.