Most Helpful Girls
No, but it can help. These guys may have lower self-esteems based on their looks, so it can be hard for women (or men) to gauge their interest in them.
Most Helpful Guys
I'm not going to get into absolutes and say 'always', because there's exceptions.
However the less attractive a guy is, the less likely he's going to get noticed and therefore he will have to do things such as making the first move in order to get the girl's attention.
The social standard is for men to make the first move. It goes across the board.
However, when a woman has very high attraction for a guy, she will sometimes go outside that comfort zone and make the first move. But her interest has to be really high.