Is it Ethical? Not only are the classes more difficult but the grading policies are stricter. Learn more. You are surrounded by undergraduates. I think if you follow these guidelines, then it will be professional. Figure out who if anyone in your department could make a stink about such a tryst.
Some places have policies about it, and some don't.
How Dating In Grad School Is Totally Different Than Dating In College
Or realizing your students are wearing shoes that cost as much as your food budget for the month. Most schools actually have some policy on this, official or not. Undergrads usually range from years old. I'm guessing it doesn't usually go quite that far, and could get the undergrad in trouble if the TA chose to pursue it as sexual harassment. So I'm surprised there isn't more dalliance with the younger crowd.