When I was younger, I would never be straight forward. I was so afraid of having to deal with a girl freak out, that if I stopped being interested in her, I'd just stop talking. She'd eventually get the hint. I have matured a bit since then XD
Now I'm much less prone to waste time, and if I don't see ANY future anymore, I'll say so.
As far as expressing feelings, I'll send out some feelers from me, tell my friends to ask her about me, etc. Rarely am I really upfront, but if confronted, I turn it awesome.