Ahhh that 4-letter word really might've been something else lol. You really are daring to ask him in that way!
Depending on the situation and how close you are - really. I "got" my first guy by admitting it to him in the Opera House lol - yes, very romantic (not)...and from that point on, I haven't been afraid of admitting my feelings to any guy that I like, unless I've never spoken to him before, in which case I'd start a conversation and become friends first.
I don't really care if I get rejected etc - it just becomes awkward for a while and then you "grow up" and let go of it - then because you've been through that, the friendship is likely to be deeper and more understanding is integrated into it because you have had that "acknowledgement of feelings".
I'd say - go for it - I'm mostly a modern woman after all - but...if it would come to a possible relationship, then I probably wouldn't initiate it by admitting my feelings first, I'd build things up and see how the guy feels - don't you find that you deal with break-ups easier when the guy likes you first?! Like, if he dumps you, then you're more likely to not feel as sad...compared to if you had done the chasing. You're prolly more likely not to feel as if you've lost a whole part of yourself...and of course, if you do the dumping, then it's your decision after all, you're in control.