haha, he should get a job coming up with the subject lines on MTV. Or watch the crazies which turn up on daytime talk shows.
Given that he's got a history of searching weird topics which I assume haven't happened, I wouldn't imagine that this one hasn't happened either. Mind you, I like searching for Victorian post mortem photos so I'm not in a position to judge him.
Question for you: why do you look up what he's been searching? I can't imagine that you'd do this unless you were actively looking for proof of something.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.