Massachusetts July 12, 2017 11:00 am Demi Lovato Plays Super-Secret House Party in Greater Boston Pop star Demi Lovato was in Lynnfield, Massachusetts, to play a house party and hang out with Rob Gronkowski. NBC Boston caught up with her. US & World Videos 1:39 Restaurant Recap: Enjoy a festive drink that supports a good cause during Pride 1:40 Restaurant Recap: New Brewery Space Opens in Somerville 1:49 Restaurant Recap: Kelly's Roast Beef Franchising Takes Off