Hope is not lost! I live in Beltsville, a few minutes down the road from CP. There is a MOM's Organic Market in College Park on Rhode Island Ave right next to REI that sells grass-fed meat, bison, pastured poultry, grass-fed milk/cream, coconut products, local veggies, etc. There is a co-op on campus from what I recall, but I haven't been there in years so I can't speak to how paleo-friendly it would be. There are also some good farmers markets around (Takoma Park is my favorite), but that season is ending quickly.
As for restaurants, I'm more of an at-home cooker so I don't have many great recommendations, but DC is becoming more and more prominent in the culinary world, and with eating local being important to some of the finer dining establishments, it is definitely possible to find paleo-friendly options when going out. I was just at Bourbon Steak down in Georgetown the other day and they offered grass-fed beef and bison, marrow bones and some other tasty options I couldn't afford. Jackie's in Silver Spring is also supposed to be good with local sustainable ingredients, but I have yet to visit. Point being, there are some good paleo options within a quick metro ride from CP.
Also, we are in the delivery area for Joel Salatin's Polyface Farm buyer's club, so you can buy your grass-fed meat, pastured pork and poultry in bulk from the man who literally wrote the book on healthy sustainable agriculture. They just did their last delivery of the season this past weekend. I'd be down for a meatshare if you or anyone else is interested for next year.
Hope that starts you off in the right direction. Good to see like-minded paleo folks close by. Good luck converting the bf!