Hi, dumblydore, and welcome to Psych Central! The first thing I suggest you do is make an appointment with a therapist and start getting professional help.
Obviously your boyfriend doesn't truly understand depression. I know it will be hard, but I also suggest you accept his desire to break up with you. He is making things worse. As you get healthier, then you can meet someone who will be willing to be understanding and more caring. I am not sure what he means about making you "better people."
We are always here for you, too. Have you checked out our depression offerings? We have a forum, at least one social group, and a chat time for people who are depressed.