• Split: Michelle Williams, 32, and Jason Segel, 33, after a year of dating, reports People and Us. The prominent actors (she has three Oscar nominations; he stars in most of the big-budget comedies) had kept their relationship low-profile, which is to say they’d never walked a red carpet together.

McAdams and Sheen at the Cannes Film Festival in 2011. (Pascal Le Segretain/Getty Images)

• Split: Rachel McAdams, 34, and Michael Sheen, 44, after two years together, report the usual outlets. They co-starred in “Midnight in Paris” and had gone so far as to hold hands in the public forum of red carpets, so it is understood if your grief is more tangible in this case.

Earlier: Stars, is your relationship status showing? The art of red carpet Kremlinology, 2/20/12

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