I have no problem dancing. I think I'm actually quite a good dancer. My issue is closing the gap and actually dancing with a girl on the dancefloor.

Are there specific signs a girl sends when she wants to dance with you? Do I need to ask her if she wants to dance, or since we are already on the dancefloor do I simply just walk up to her and start dancing?

I suppose I'm trying to distinguish between girls who are out there just to dance vs. girls who are out there to dance with a dood.