Well defenseless,
You need to think carefully! If you ask her and she says yes, what is more important? Dancing or a relationship? If both work then your lucky!
And if she says no, what will you do? Keep dancing or find a new partner?
You need to think what affect your feelings will have on your partnership and decide what you really think is important!
Also, as someone has said, women often don't realise what they are doing to attract men. So just to be nice, I suggest you keep your eyes away from places where she is not wanting you to look!
Good luck!
Keep on Dancing,
Sami.