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" 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.

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

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.

Kevin Costner has marked his birthday by sharing a throwback photo of himself with his former co-star Whitney Houston, admitting that he is “lucky”. Costner, who recently left his the now-completed Yellowstone amid a shroud of controversy,

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