Why did my Boyfriend do this? im so CONFUSED!? was he trying to use me?

This guy is still 18..of course he is chasing over his sexual desires..Now I can't say that all boys are like this (which 99.99999% are); but that is what guys are looking for in relationships majority of the time. Also, most of the time relationships dont work because of the lack of sexual attraction between a couple. So...just be patient..and don't worry too much over what he thinks...because it is whatever YOU think and that's what matters