VIDEO : Nicole Johnson Talks Boomer's Instagram, Ryan Lochte, and Her Future With Michael Phelps

It's true Michael Phelps brought six new medals home from Rio, but the real star of his final Olympic performance, or at least the cutest, smushiest one, was his tiny baby, Boomer Phelps. (You may have seen him on Instagram?) The 3-month-old was a mainstay in the bleachers alongside his mommy, Nicole Johnson, his grandma, Debbie, and his noise-canceling headphones (gigantic). Cosmopolitan.com spoke to Johnson, who dated Phelps on and off for eight years before getting engaged in 2015, about her experience at the games, whether she'd ever try cupping on Boomer, and what she thought of Ryan Lochte's false robbery claims.