The pop star and fashion designer has previously gushed about her husband's hotness, and on Saturday posted an Instagram photo of the pair touching tongues, wrapped in one another's arms.
Simpson's caption: "DATE NIGHT" (with an emoji of a pair of puckered red lips).
In September, Simpson, 35, shared just how attractive she thought her former NFL player husband was, in honor of his 36th birthday.
"My husband is hotter than yours! Happy Birthday Eric Maxwell Johnson! You forever make me lust," she captioned a black-and-white photo of him.
Of course, the couple is no stranger to sexy and silly Instagram posts – as when they won Halloween last year with their Vacation costumes. She went as Christie Brinkley's unnamed traveler and he went as Chevy Chase's Clark Griswold.
And in February, Simpson shared an Instagram photo posing in a pair of Daisy Dukes and a teeny red bikini top.
Sitting alongside Johnson, she captioned the pic "Happy Valentines Day #thisJohnsonisgettinIt."