Two years ago, Glynnis MacNicol wrote “I’m 40. I Don’t Want to Be a Mom. Now What?” for the Cut. Soon thereafter she discovered the answer and wrote about it in “The Unexpected, Exhilarating Freedom of Being Single at 41.” Now 42, Glynnis is working on a memoir while entertaining — and rejecting — a steady stream of younger men. She stopped by Sex Lives to reflect on her unconventional happily-ever-after, and to tell 32-year-old host Maureen O’Connor what the next decade of life could hold. Call 646-494-2590 to tell us your thoughts.