Rebecca
Your experience with depression will probably be different than mine. I'm in my late 40s and male, you're (I guess) in your 20s and female, but I find that my experience is that I never know how I'm going to feel from one day to the next.

That said, I think it's probably a good thing overall that you're having a friend visit. I've had friends from jr. high come visit me each year for the past three years, and I think it's helped a lot. I haven't always felt like doing stuff with them, but I act as if I do and try to push through the uncomfortable feelings. It doesn't always completely work, but you may get to a point where you find you're enjoying yourself.

I had hoped to find some quotes on this, but alas...