MSNBC anchors Lawrence O'Donnell and Tamron Hall have a romance spicing up off set. The single "Last Word" host, 60, has been quietly dating the pretty midday anchor and rising star at the network for months. The duo have kept their relationship low-profile in the studio but have been spotted canoodling at downtown haunts. O'Donnell, a "West Wing" producer who has a daughter with ex-wife Kathryn Harrold, was linked to actress Kerry Washington in 2008. MSNBC declined to comment.