Is he trying to get in my pants?

i like this guy & i was surprised that he liked me. hes good friends with my best friend so he tells my friend everything. i learned about this guys past - 1 gf (who fell in love with him, but he only liked her). teen boys are often pervy but ive nvr experienced this be4. hes nice to me but says things behind my back. some r ual and im scared. how can i like him without falling for his spell?