ok to ask a girl to dance is pretty easy, just go up to any girl u want to ask and touch her arm, shoulder, hand to get her attention and with a big smile say "would u like to dance." as for a kiss i wouldnt rush it right away on the dance floor, what i do sometimes when im into a girl is in a slow or fast song dont matter is when we catch eyes i have a big smile, obiously she'll smile back, i kiss her on da cheek, if she has an even bigger smile than it was before, then i know she liked it, later i'll go in to kiss her on her lips, sometimes it works sometimes it doesn't. but as for u, u can just feel her on her waist or hand when ur dancing just to let yourself be known, she cant say anything or get made cause u aint doin anything wrong, but if u think shes really into u go for it, if she dont like it kinda play it off while ur dancing as kind of a spur of the moment thing. hope this helped u out a little or alot.