I think it was a bad move and he recognized it as such. At a minimum, he's now on the record saying factual things (i.e., that he was a virgin in high school) that could easily be contracted and put him in a position of lying. For example, if a former HS girlfriend has a diary detailing the first time she had sex with Kavanaugh, he's been caught in an obvious lie. I can guarantee you that the Dems are right Now fact-checking everything he said tonight to get fodder for the argument that he's a liar and that his denials are not credible.