"I just wanted Ryan to know that I loved him no matter whether he won or lost," Garfield told Colbert on Tuesday's Late Show.
The Hacksaw Ridge star locked lips with the Deadpool star at the black-tie awards show on Sunday after Reynolds lost the award for Best Actor in a Musical or Comedy to Ryan Gosling. The pair kissed as the La La Land star made his way up to the stage to accept the honor.
"I just wanted him to know that it doesn't matter [if you win or lose], it's how you play the game," Garfield explained. "He showed up, he gave his all, it doesn't change anything in my heart."
When Colbert asked the two-time Golden Globe nominee about how comfortable he is kissing another man, considering some men aren't, Garfield replied, "I don't even understand the question."
To prove the point, Garfield leaned across Colbert's desk to recreate the conciliatory kiss he shared with Reynolds days earlier. Then he kissed Colbert again.
The Late Show later took to Twitter to share a pic of the hilarious moment, writing, "It's getting hot in here!"
Garfield, who stars in Martin Scorsese's highly anticipated historical drama Silence, also opened up about having to lose 40 pounds for the role, which he said was a challenging considering, "I'm a skinny guy anyway."
"You just kind of don't eat and get very, very angry at everything around you. That's pretty much the process," the 33-year-old actor
recounted. "[Fasting] is a beautiful spiritual process, because the idea is you empty out in order for the spirit to enter. And my goodness, I was empty. It was brutal, we'd kind of be sneaking blueberries and almonds in between takes."
Silence opens in wide release this Friday.