Blake Lively‘s finally getting a little peace after months of chaos … and Ryan Reynolds made sure Mother’s Day was all about hyping up his “kind and fearless” wifey.

The actor jumped on IG Sunday with a gushy tribute to his wife Sunday, posting a collage of pics together and writing, “I appreciate this mother beyond measure” … and called Blake the “love of my life,” telling their four kids, she’s “the life of their love.”

Blake was loving every second of it too … reposting the tribute to her own Stories with the flirty reply, “I happen to be pretty fond of you too.”

The lovey-dovey moment comes after Blake finally closed the chapter on her ugly legal showdown with Justin Baldoni … which had turned into one of Hollywood’s messiest battles in recent months.

The “It Ends With Us” costars settled the case last week in a last-minute move before trial was set to begin … sparing both sides from what likely would’ve been an absolute public bloodbath.