While a lot of fans did use the opportunity to wish Mr. Costner a very "Happy Birthday," some couldn’t help themselves and got a little snarky on the post. The top comment, for example, was a joke about your “ex” wishing you a happy birthday.

The ‘Yellowstone’ star, who turned 70 on Jan. 18, starred in 1992’s ‘The Bodyguard’ alongside Houston, who died in 2012

The "Yellowstone" actor shared a sweet photo of him and Houston on the set of 1992’s romantic thriller, "The Bodyguard," and reflected on how much he misses his former costar.

Kevin Costner honored his friendship with the late and great Whitney Houston on his 70th birthday over the weekend.

Kevin Costner celebrated his 70th birthday on Saturday, Jan. 18, by sharing a throwback photograph of himself from his childhood on Instagram.

As Kevin Costner turns 70, he remembers his once costar Whitney Houston. On his birthday, Jan. 18, Costner shared a photo to his Instagram Stories of himself and Houston on the set of 1992’s “The Bodyguard,” in which the pair costarred. The photo originated from Houston’s account, which is run by her estate.

Actor Kevin Costner is celebrating a milestone birthday while honoring the late Whitney Houston. On January 18, the former Yellowstone star turned 70 and shared a nostalgic moment on Instagram, posting a throwback photo with Houston from the set of the 1992 hit The Bodyguard.