I've noticed that married women usually line dance, when their SO does not want to dance.
He should try to keep you happy by slow dancing. The dance floor gets more crowded, with spouses.
Maybe he will have a change of heart when he sees that no one is really watching to see how well, or not so well, his moves are.
IMHO - You are fighting a losing battle, as many women, are in the same boat.
A lot of men just don't like to dance, period......but I wish you well.
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"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).