A lot of us guys fall into the trap of asking girls to "hang out" when we are really intending to ask them on a date. Asking a girl to hang out makes it seem more casual without taking the risk of getting shot down or being too forward. However, like any investment, risk equals return. If you don't have the cojones to put yourself out there and ask a woman out to dinner on a proper date, then you can't expect her to take you seriously.
In the following video you will see the 3 P's of asking a woman on a date:
Pair up (just you and her)
Plan the date, don't ask her "So watcha wanna do?"
Pay for the date...should be an unspoken rule. Don't be cheap.