A couple of years ago, an old dance instructor paired me with a 20-year old woman (a soccer player; I've mentioned her before). She was willing to put up with dancing with an old man to learn some ballroom skills. She is quite good-looking, too.
We made it almost a year and a half before her interest started to wane (when soccer season started again); we even tried competing (without winning anything). Eventually, our generational differences caught up with us and I ended the partnership.
Other guys (and gals, I guess) can try the same thing; find some young person who really wants to learn and give them the opportunity. Of course, you need to be able to keep up with them; they don't want to learn to dance like an old goat.

jj