Ryan Reynolds joined ex-wife Scarlett Johansson’s fiancé, Colin Jost, on “SNL.”

A source told us: “It was cute — there was no problem between them at all on set.”

Reynolds appeared with Alex Moffat on Jost’s “Weekend Update.” At the end of the segment, Jost quipped Reynolds and Moffat are his “two best friends.”

Johansson was married to Reynolds from 2008 until 2011, and married Romain Dauriac in 2014. They divorced in 2017.