TA-student romance

By email, a reader asks for advice on a situation in which the personal and the professional seem like they might be on a collision course: I am a junior at a small (< 2000 students) liberal arts college. I got recruited to be a TA for an upper division science class, and it's going swimmingly. I'm basically a troubleshooter during labs, which the professor supervises. The problem is that I've fallen for one of the students, also a junior. Is it possible for me to ethically date her? The university's handbooks are little help--sexual harassment is very strictly prohibited, but even faculty…