Hmm...I haven't lived there for a few years, so what little knowledge I had is probably outdated. You should definitely go to READERCON in July, and put up a sign saying you're looking for a group, or just talk to people you like there. Meanwhile, my sympathies - my move also stopped me writing for awhile. It's tough.

I miss Somerville. Delia always went to the Diesel Cafe in Davis Square to write, and it did her a world of good; maybe you can invoke her spirit.