Bieber also wrote on another video: “Hailey with your attitude and my savage behaviour [sic], we are in a world of trouble haha.”
If that wasn't cute enough, Justin has also been posting throwback photos of himself in school when he was only a little bubba!
While Hailey certainly isn't pregnant (we think?) the pair did tease fans with a fake pregnancy before their second wedding on April Fools.
Although, it wasn't a very funny joke.
After the scandal, Justin apologised for how insensitive the joke was.
"There’s always gonna be people offended, there’s also people who don’t take jokes very well, I am a prankster and it was APRIL FOOLS," Justin wrote.
"I didn’t at all mean to be insensitive to people who can’t have children. A lot of people I know, their first go to prank on April fools is telling their parents they are pregnant to get a big reaction. But I will apologize anyway and take responsibility and say sorry to people who were offended.
"I truly don’t want anyone to be hurt by a prank.. it’s like when I shoved cake in my little sisters face for her birthday expecting her to laugh but she cried.
"You sometimes just don’t know what will hurt someone’s feelings not to compare pregnancy with cake in the face but it’s just to paint the picture of not knowing what will offend. Some might have laughed but some were offended..