Thread: Do girls tend to be attracted to guys who look "innocent"?

I have noticed that whenever I feel kind of shy among people, but still feel happy about the situation and smile shyly about it for myself, a lot of girls seem to react really well to that.
Basically, if I feel this particular way then they very often smile to me if I look in their general direction, and their expression is kind of like how girls often look when they are very flattered by something and are unsure how to handle it.
I don't really get these reactions when I feel grave or neutral, but as soon as I have this mix of shyness and kindness on my face they seem to melt.
And I have heard of other guys like this as well, and indeed, most ladies' men I know tend to have a similar charisma - a certain "soft" and "innocent" caring look.
Do you have any explanations for this?

My theory is that maybe these girls find these kinds of guys less intimidating, and probably think that innocent look is cute and charming or something, and apparently it touches their hearts in some powerful way.