I know I'm probably too late with this but are you going to discuss severe bpd in your class such as instant mood swings that go from one extreme to the other( an example would be loving someone very deeply then in the next second not understand why you ever loved that person to begin with and struggle to figure out why) I go through this in the blink of an eye and I don't even realize its happened until reality smacks me in the face and I realize I feel absolutely nothing for that person at all. No empathy, no sympathy, absolutely nothing at all. Maybe ask your teacher about it I would be really curious to hear more about why I do this