How do I get the joy of playing games back?

Ok, this is going to be a bit personal, so those of you who don't like it can skip this topic.

When I've had bad times (which I had quite a lot last year), I've always been able to look forward to coming back to the computer, playing a good game and still make a sucky day end in a good way. Games have been my main source of entertainment for the last few years, and I've had so much fun playing lots of excellent games.

Well, all that just changed. Long story short: My girlfriend since almost 15 years is working abroad for a few months, and she met some other guy. She was also my best friend, so I lost that at the same time, since she thought it was best if we don't talk for a while after this...

Well, everything feels so very empty right now, and I remember how much I was looking forward to playing the games in my backlog, now I can hardly bring myself to launching a game.

I'm sure I'm not the first person to have experienced something like this, so if you have any good tips, I'm all ears.

edit: Thanks for all the comments! It's been really helpful - I've been reading all of them and I will be replying to some of you... but two things I really realized

1. The problems I had last year, even though it was very stressful stuff, weren't really depressing. That's why games worked well as a way of getting in a good mood. Sundance's South park quote puts it in a pretty good way: "If you're sad... you're gonna have a bad time.". Maybe I considered games to always be a way to cheer me up, despite mood, but I haven't felt like this before, so good call...

2. Doing other stuff is what everyone recommends. As I mentioned early on, I am working out (since quite a while back, have been continuing with it even after the news), and that's good. I'll also try to meet more friends and get out more in general. Also try other things to get occupied. I don't know the reason really, but today I ended up doing my taxes two months early. Felt really good to get something done, so I'll try more of that.Getting things done that is, not taxes ;) Learn something, do something, try something new. Takes the mind off the sad stuff and the bonus is the feeling of accomplishment afterwards that helps a bit extra compared to just being occupied.

I'm hoping to get the mood back for games soon, but I won't worry about it if it takes time... maybe I'll play an hour every now and then if I'm in the mood. If not, I'm sure things will change when I feel better again.

edit 2 (April): Thanks for more comments. I've been away for most of the time since the original post, but now I'm finally starting to feel a bit better, I've had lots of time to process my feelings, talk with friends, occupying myself with other things - and you know what? Today I got in the mood for playing some games again. Won't have the time today, but tomorrow I'll launch a game for the first time since February! :)