Just be upfront and honest,I know I prefer it when poeple tell
me straight up to my face how they feel,it will make him respect
you a lot more if you show him you have the coursge to tell him
your feelings.ask him out....what's the worst he can say?.....no??
then no worries,just ask him if you can still be friends,you never
know what might happen in the future....goodluck 
