what are some pros and cons of a girl asking a guy out?

priscilla • took a deep breath and now i feel fat
so, I like this guy, but he's really shy and it's really hard to tell of he likes me or not and long story short, I feel like I'm always the one who has to make the first move (as of recently) and I know that if -I- ever want anything to actually happen, I need to step up and ask him out or whatever. so yeah..