men vs.boys

So this guy DMd me on instagram and he really tjrew me off because most guys ask for sexual favors or something weird but he started asking me about tbibhs i liked shapes, colors, food,religion, future, etc. At first i thought it was strange because we were having a really nice educated conversation. Then he asked me my age, which im a but embarrassed about because i am extremely mature for my agebecause of my past. I decided to tell the trutj and say im 16. Hes 19 so i felt he was just going to stop talking to me all together but he didnt. He lives really close and we've had really nice conversations about life and just things in general. But im still skeptical. Whats your opinion on the situation?