How to find new gym/diet buddy

Hey r/loseit, I need some advice.

I moved to the DC Metro area about 2 months ago and have in the process (of working crazy hours, losing my close friends, and un/packing apartments) lost any motivation about improving my body.

Of course, as many of you realize, fitness isn't just about the body. I've become tired, cranky, and have crinks in my neck and back from sitting all day with little (<30 minutes) of even walking.

Back home, I had a close friend that would remind me to go to the gym at least 2 days a week (which helped keep me motivated for the other days!). We talked about diet tricks and keeping fit (even though she was maintaining, and I have 40 pounds to lose).

So I'm curious if there is a way to find a new gym buddy. Are there websites or a sub where I can meet people?

Thanks for any and all tips!