Here's my observation: If a girl likes you or thinks you are attractive, everything you do will be romantic -- even the stalker-like things you see in crappy romantic comedies, like shouting to her upstairs window in the middle of the night and things like that. But if she doesn't like you or doesn't think you're attractive, then those exact same things will creep her out or at least she'll think you have ulterior motives, even for little things like a smile or opening a door. It's more about what she already thinks of you than what your real motives are. I've seen this countless times, from both sides.