Answer:

You used to go to a salsa class a week, and maybe go out dancing once a month right?  You used to go to movies, bars, maybe even a show or two.  You used to have a group of friends who did not dance! Slowly but surely, you started taking more classes, maybe even two or three a week, who knows, maybe even more..You suddenly started making excuses to your friends who don't dance. "uhhh, can not go out tonight, sick ", or "busy tonight .got a date", when in reality, you were sneaking out to dance.