My Mom's New Boyfriend (2008)

Single, low-ranking FBI agent Henry Durand, engaged to profiler Emily Lott, moves back to the parental home in Shreveport with his widowed mother Marty, who to his distaste turned into a cougar party animal. Henry has his doubts from the start about mother's latest admirer, slick gentleman Tommy Lucero, even before the FBI swears him to secrecy but promises a promotion if he pulls off an unorthodox undercover operation: spying o the couple, without telling his loved-ones, as Tommy is an international master jewelry thief. Indeed he already constituted a team of mutually suspicious crooks, and has a master plan.to steal Bernini's sculpture "Mother and Son", on loans to the city museum for a prestigious exposition, and it includes dodging guards as well as Henry's FBI team, plus a major twist.