Well, this student is apparently clueless about two things, biology and girls.
It just goes to show you, teachers know a lot more than just the subject they teach.

Aah, that blissful feeling of being in love — it's a beautiful thing, but it doesn't come without its complications. At one point or another, many of us will have found ourselves in questionable relationships where we put up with behaviors we shouldn't have—speaking for a friend, of course. The rose-colored glasses we wear in relationships can blind us to some pretty glaringly obvious red flags, which we can only see clearly once the relationship has ended. On the bright side, we can use them as learning experiences of what not to ignore when it comes to our next relationship. A tweet asking people to share the biggest red flags they ignored in relationships has revealed some hilarious responses, which might make you relate to any previous sh*t shows you dated in the past. What were some red flags you ignored?