I don't know what good advice I can give you,but usually I get depressed just like you when I'm staying home and have nothing to do for more than 3-4 days.After I get out a bit I'm starting to feel better.So why don't you and your bf have a walk in the park ,go out with some friends ...things like that.I order to feel alive you need to do things that a living human do.
Anyway I hope you will get better soon.