No. 'Bobbed' anything is not sexy. Long hair is what differentiates them as a woman, it's their sexual attraction. Whoever told women short hair is attractive is not a man - men have always determined what is attractive, not women. Go look it up.
I'm actually not picky with hair length or styles because different things suit different people.
But you said you have a baby face and look pretty young, so super long hair would probably make you look even younger. Go for the bob! Something a tiny bit shorter might work well, too, and would be hella attractive.