He said it was foolish and apologized. Maybe it was just banter. Maybe he only found out that she was married afterwards.
The more I think about this the more I suspect that Trump leaked the tape himself. It frames the debate in a way that he can make a play for the woman’s vote.
If the tape was due to come out the day of the debate and he puts it out a few days before, then that would benefit him. My theory is a bunch of moronic dem-media have a number of tapes like this are wetting themselves and jumping the gun and releasing too soon. They are stupid amateurs and it won't work.