In February 2020, Blume started dating French Olympic swimmer Florent Manaudou, and in September 2021 they announced their engagement.[5][6]
Blume swam for Sigma Nordsjælland Club in Denmark until early 2022.[7][1] When her fiancé, Florent Manaudou, announced he was changing swimming clubs, it was announced that Blume would likely change clubs to his new club, CN Antibes, as well, so she could train with him as they prepared for the 2024 Summer Olympics in Manaudou's home country of France.[8] In February 2022, Blume officially switched to and started competing for CN Antibes.[1] Manaudou and Blume are no longer together, their relationship ending sometime before June 2024.[9]
Blume participated in Edinburgh International 2017 and competed in the 50 metre freestyle event, finishing at 24.51 and winning the gold medal. She also won gold in the 100 metre freestyle with a time of 53.93.[20] This was her first competition after the Rio Olympics.[21] In April 2017 Blume participated in the Stockholm Swim Open; in the 50 metre freestyle event she finished second behind Sarah Sjöström with a time of 24.15.[22]
Following the 2020 Summer Olympics, Blume decided to capitalize on her Olympic fame by taking a break from swimming competition and transitioning to reality television by competing on the Danish dance show Vild med dans, where Danish celebrities compete against each other to earn the designation of top dancer of the group of celebrities who participate in the given season of the show.[8][25] Her professional dance partner for the show was Morten Kjeldgaard, who previously won the show with his then-celebrity-partner Sarah Mahfoud, a professional boxer, in 2016.[26] Blume's pasodoble on the dance floor with her partner in the eleventh week of competition, where she excelled dominantly in physical synchronization with her partner, along with her contribution in a group Charleston dance were good enough for her to advance to the semifinals of the competition.[27] In the semifinals Blume advanced to the final with a score of 50 points, overcoming a wardrobe mishap during an Argentine tango where her garment just below hip level caught on and stuck to one of her partner's shirt buttons.[28] In the grand finale, Blume and her partner placed third overall in the competition.[29]
2022: Retirement
Following a multiple month break from swimming competition after the conclusion of the Olympic Games in August 2021, Blume returned to training in January 2022.[30] The next month, Blume started competing internationally for her new professional swim club CN Antibes, which is based in Antibes, France.[1] Approximately nine months later, SwimSwam, Swimming World, NBC Sports, and FINA announced she had permanently retired from the sport of swimming with no intent of returning to competition.[2][31][32][33]