Blake Lively Isn't Over Backstreet Boys Dancing to *NSYNC: 'It Was Too Much For Me to Handle'

Blake Lively
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Blake Lively attends the screening of "The Rhythm Section" at Brooklyn Academy of Music on January 27, 2020 in New York City.

Blake Lively isn't saying bye, bye, bye to her favorite boy bands after they came together for the ultimate collab of the early aughts.

*NSYNC's Joey Fatone and Lance Bass taught Backstreet Boys members AJ McLean and Nick Carter the dance to their 2000 top 5 hit "Bye Bye Bye" that Bass shared on Instagram earlier this week. Celebrities from Gabrielle Union to Hayley Kiyoko were obsessed and desperate for an invite to the next rehearsal, while Lively was very much living for it and fangirling at the crossover moment.

"True story: I just watched this until Instagram finally cut me off by pausing the video," she wrote on her Instagram Story Tuesday with a GIF of a little girl fanning herself on the floor. "Because even they knew it was too much for me to handle in one sitting…"

And who did Lively have to thank for putting this video on her radar? None other than her husband, Ryan Reynolds. "Also, a true story. My husband sent this to me. He understands the significance," the Gossip Girl actress added. "God bless him."

Fatone, Bass, McLean and Carter debuted the boy-band supergroup, cleverly called Back-Sync, June 18 at Bingo Under the Stars, a Pride Month charity event benefitting the Trevor Project that was held at L.A.'s The Grove.