| Luz |
Alcazar | Famous photographer |
| Cal |
Berkeley | Firm owner and Olivia's boss |
| Richard |
Bernard | Caroline's personal security |
| Brenda |
Cawley | Nurse at Adam's hospital |
| Joyce |
Chen | One of Barb's students |
| Benjamin |
Dunn | Olivia's high school nemesis and crush. Aka: Ben |
| Gretchen |
Dunn | Ben's oldest daughter |
| Louisa |
Dunn | Ben's daughter |
| Myrna |
Dunn | Ben's mother |
| Tilly |
Dunn | Ben's daughter |
| Adam |
Farrell | Olivia's husband |
| Rachel |
Hayatama | Vanity Fair writer |
| Soren |
Holm | Olivia's boss at Birch PR |
| Caroline |
Lang | Movie star and Olivia's client |
| Willa |
Lindholm | Max's mistress |
| Charlene |
Lyle | Mrs. Stanhope's neighbor |
| Nicola |
McKesson | Orthopedic surgeon and Adam's mistress |
| Olivia |
Morten | Narrator and protagonist |
| Polly |
Morten | Olivia's mother |
| Jacob |
Peterman | Chief of cardiology and Adam's mentor |
| Nanette |
Peterman | Jacob's new wife |
| Winona |
Ryder | American actress |
| Mrs. |
Stanhope | One of Barb's students |
| Max |
Walsh | Caroline's ex-husband |
| Gregory |
Werner | Adam's roommate |
| Leah |
Werner | Gregory's wife |
| Amber |
| One of Adam's flings |
| Barb |
| Swimming coach |
| Bryce |
| One of Ben's staff |
| Elijah |
| Leah's yogi |
| Ellen |
| Editor |
| Gus |
| Young actor |
| Jillian |
| A stylist |
| Joanne |
| Ben's secretary |
| Margaret |
| One of Adam's flings |
| Max |
| Caroline's publicist |
| Sarah |
| The first woman Adam cheated with |
