Insider reveals how Scarlett Johansson's fiancé, Colin Jost, and ex-husband Ryan Reynolds interacted at 'SNL'

There's no chilliness between Scarlett Johansson's current and former flames.

The actress' ex-husband, Ryan Reynolds, made a surprise appearance on "Saturday Night Live" as a guest on "Weekend Update" — which is co-hosted by her fiancé, Colin Jost.

Reynolds rolled up to the desk to join Alex Moffat in-character as two guys who are cocky, wealthy and totally impotent. "It's tight to be here, CoJo," Reynolds said, greeting Jost.

"My two best friends," Jost dryly joked of the two as the segment wrapped up.

RELATED: Colin Jost and Scarlett Johansson together

Although some guys might blanch at the idea of palling around with a lover's past or current beau, an insider speaking to Page Six said there was no such hesitation: "It was cute. There was no problem between them at all on set."

Johansson herself will host "SNL" on Dec. 14, where she may or may not acknowledge her engagement to Jost, who is the show's co-head writer alongside Michael Che. The two became smitten in 2017; multiple onlookers reportedly saw them smooching at an "SNL" afterparty after she made an appearance on the show.

After two years together, the couple got engaged in May 2019.

Reynolds and Johansson were married from 2008 to 2011. He is now married to actress Blake Lively.