I'm new to this game, but I've been trying to smile more at random girls instead of my usual "get caught lookng and quickly averting my gaze all creepy-like." My problem is that I feel like when I flash a toothy grin it comes off as forced and unnatural. Does a lighthearted grin tend to work as well, or does it convey more of an "I want to get you naked so I can quarter you and turn you into my dinner" sort of impression?