Debra Messing and her estranged husband, Daniel Zelman, are clearly putting their child first. Just days after a rep for the two told E! News that the former couple "had privately separated earlier this year," word comes that they'll keep residing under the same roof for the sake of their 7-year-old boy, Roman. "In the short term, they plan on continuing to live together with their son, then gradually transition into a new living situation," a rep for both Messing and Zelman told Us Weekly. But that's not all. "They have no immediate plans for divorce," insisted the rep, adding: "They have been a couple for 20 years, and the nature of their relationship simply...