If you watched the Academy Awards last month, you might have noticed a different kind of pairing on the red carpet. Where nominees typically bring romantic partners or family members, Manchester by the Sea star Michelle Williams was accompanied by her best friend, Busy Philipps. Philipps, who has two children with her screenwriter husband, has said she and her female friends talk about forming a commune and raising their kids together, without men. And they may be onto something. Today, fewer American women in their early 30s are married than at any other point since at least the 1950s. The US marriage rate overall hit a record low in 2015, seeming to confirm an earlier study that found 55 percent of singles are not looking to get married. With women increasingly marrying later or not at all, the supporting companionship once provided by husbands is now often being provided by friends.