To celebrate their 46th wedding anniversary, Donny Osmond and his wife Debbie posted a touching wedding photo to Instagram.

In this rare picture, Donny, decked out in a blue tux, watches adoringly as Debbie cuts a four-tiered cake. Debbie is dressed in white and sporting a veil.

“It was definitely a honeymoon we won’t soon forget,” Donny remarked, recalling their unique honeymoon that featured a family trip to Las Vegas in 1978. He went on, “No one will know where we are,” making a hint about a more private event that was approaching.

Donny’s public identity has been built around his relationship with Debbie throughout the years, which is often honored with heartfelt gestures.