This week on “Sunday Morning” (February 11)

News Snapshot:

The Emmy Award-winning "CBS News Sunday Morning" is broadcast on CBS Sundays beginning at 9:00 a.m. ET. "Sunday Morning" also streams on the CBS News app beginning at 12:00 p.m. ET. (Download it here.) Hosted by Jane Pauley. COVER STORY: Experts weigh in on the psychology of romantic regret: "It sticks with people" Whether it's related to romance or not, regret is a near-universal human feeling, according to author Daniel Pink. For his book on that subject, Pink collected thousands of lovelorn anecdotes from people who say they wish they'd done things differently — sometimes, in relationships or missed connections...