Like most of us, "Late Show" host Stephen Colbert was left with one question -- "Why?" So, during Andrew's most recent visit to the show, he decided to get the inside scoop on the two movie stars' lovey-dovey encounter.
Turns out, it all had to do with Ryan losing Best Actor in a Comedy or Musical to Ryan Gosling.
"I just wanted Ryan to know that I loved him no matter whether he won or lost," Andrew said. "I just wanted him to know that it doesn't matter [if you win or lose], it's how you play the game. He showed up, he gave his all, it doesn't change anything in my heart."
Hey, I'm into it.
Oh, and then Stephen and Andrew shared a kiss of their own.