I'm going in the opposite direction as you this summer. I'm going from the Boston area to the MD/VA/DC area.
Anyways.. what about clubs and such from the college/university you are attending? Other than that, the above mentioned ideas are a good place to start.
And if all else fails, I'm not an A Phi.. but I'm 2 hours away from Boston in NH if you ever want to see more of New England!
As HBADPi said.. Boston and the surrounding areas are beautiful and have a LOT to offer. Think outside of what you're comfortable with and know.. try something new. I know once winter hits.. on Frog Pond in Boston there is Ice Skating.. that is a LOT of fun!
*Hugs* Hope things get better soon!