Bieber, 24, posted a black and white Instagram of the couple kissing as Baldwin, 21, wrapped her arms around Bieber, reported people.com.
The post's caption also revealed a sweet nickname that Bieber may have chosen for Baldwin. It reads, "Hunny buns punkin."
Bieber and Baldwin wed in a secret ceremony in September. They haven't been shy about public display of affection as photographers have repeatedly snapped them holding hands and locking lips in public.