I agree. I had been friends with my current girfriend for about a year but hadn't really thought about anything more. Then one day, she started giving me signals out of the blue. I didn't stop to analyze anything, I just kinda went with it. Took about a day to go from having no idea we liked each other to actually dating, we still have a very strong relationship.

Sometimes you just gotta go with your gut, and in many of those situations there really isn't as much to lose as you thought at first, and a lot more to gain than you thought at first.