My salsa partner kept stepping on my foot and apologising more each time

At a beginners salsa class in Machuchal on a Wednesday night my dance partner stepped on my foot four times in the first ten minutes and apologised each time more sincerely. By the end of the night we were both laughing so hard that we could not count the beat. We meet every Wednesday now. We have improved slightly. The foot has not. The teacher says we are a very warm pair. I think she means we both sweat a lot. I think we are fine.