That was stupid beyond belief. Ain't no way you want to ever be in a "he said, she said" situation were you are alone with an underage girl. It could very well be as innocent as just that - a hand hold and a hug after a study session. But alone? Dude was asking for trouble and unfortunately he found it. Sucks to be him. There are enough predatory men around that you have to give the girl the benefit of the doubt and go with her story.
"Stupid is as stupid does," as Forrest's mama always said!