HAHAHAmaybe he was just messing around or experimenting ?if he doesn't know you saw him just don't mention it to him - he was probably just being a strangely curious boy.
I think that is so cool and perfectly normal, he is trying to look good for you, honey! These days there is no wonder that guys are taking good care of themselves. I don't like hairy boys so my partners shaves all the bits i want to be hair free!!!and don't listen to those other guys - some of them still live in the past and think that it's gay, but its NOT!