I quit my job in September - It was a good-paying, almost criminally easy job, with a lot of freedom in terms of arrival time, long lunch breaks, chatting with friends, etc. There were lots of bad decisions being made there, and I did feel pretty down about my ability to contribute. I haven't found a job yet (mostly, I think because I've barely looked and only to satisfy people who wonder), but I think quitting my job was pretty dumb in retrospect.

The reason I bring it up is because I urge you to consider the difference between a vacation, which is often as pleasant as yours was, and unemployment, which at first seems like a vacation, but in reality just gives you more time to mope. Your job might be the suck, and believe me I have nothing but empathy for you, but even beyond the paycheck or the health benefits and retirement plan, it's doing you a service.

As for your boyfriend, it seems as though he either doesn't understand what is going on with you, or is scared to mention it, hoping you'll snap out of it. If you can, you might consider showing him this thread. It's often easier to talk about it once he's seen you open up to someone else, which I think is one of the reasons group or couples therapy can be so effective.