Bloom has a long history of creepy behavior towards attractive undergraduate women. One who later spoke out publicly about the experience is Naomi Wolf, author of The Beauty Myth and other books. Sex and Silence at Yale
Even back then, however, it was merely creepy and sad, not actually threatening, although it was rare for young women to be very good at dealing with it and deflecting it. As a result, while good-looking women may have had an easier time getting into Bloom's classes, it was very hard for any undergraduate women to sustain a relationship with him over time.
Anyway, Bloom IS old and sick. (And brilliant, and weird, and creepy, and sweet, and greedy. Really the whole package.) Don't count on his having a big effect on your education at Yale. Do try to talk yourself into his course if you want, although you would probably do a better job of that if you waited a year, assuming he is still teaching in a year.