my question was simply: how can i communicate that i am interested in him, and ask how he feels without adding too much pressure?
Funny how no one has actually answered it as of yet...
i will take a stab. if you are interested just tell him you are interested. no games, no coy hints, they just won't get it. you need to be forthright.
similarly, if you want to know how he feels about you, ask him. i don't know how this could be perceived as undue pressure. ask him, he'll give you a straight answer.