It was an emotional performance of Taylor Swift's new song when she made an unscheduled appearance on Jimmy Fallon's TV show.
The singer, who just released her brand new album 'Reputation' last week, appeared on The Tonight Show - the first show since Jimmy Fallon took time to mourn the loss of his mother.
During his opening segment, he talked about how he and his mum would squeeze each other's hands three times to signal how they loved each other.
So it was only fitting during her song that Taylor delivered a lyric which paraphrases Jimmy's story - "Squeeze my hand three times in the back of the taxi."
Tonight Show writer and producer Mike DiCenzo took to Twitter to share how his fellow crew were very moved by the song, which they had never heard before.
"I nearly gasped. Tears. I think everyone in the audience started sobbing. I could see Jimmy silhouetted at his desk dabbing his eyes with a tissue. We all lost it. It was a beautiful coincidence in a beautiful performance," he wrote.
"That hug between Jimmy and Taylor after the song was 100% real emotion. Whatever you think of Taylor, she did something beautiful for Jimmy and our show today, and we're forever grateful."
Watch the full performance above.