The actress turned 34 on March 3 and JT marked the big day with a sweet Instagram post about how much his wife means to him.
"Happy BAE-DAY, baby!! I can't put into words what you mean to me... You are the GREATEST Mommy and Wife a man could ever ask for," wrote the singer. "I love you to the MOON AND BACK!!! --Your Huz."
It was a similar sentiment to the one he expressed in October when he was inducted into the Memphis Music Hall of Fame, where he made a priority of thanking his "beautiful, loving and incredibly understanding-of-her-husband's-shortcomings wife, Jessica."
He went on to call her "a rock" and "tough as nails," adding "baby, I love you more than I could put into words and more than any song I could ever write" and joking that they'd just celebrated their third anniversary "which in Hollywood years … [is] like a 15-year anniversary."
Jessica opened up about becoming a mom on the "Today" show last fall, admitting that the experience gave her a new respect for what her mom did for her growing up.
"[It's] incredibly hard, the hardest job in the world and I've never been more thankful and grateful to my own mother," said the actress.
"Oh, my gosh I'm going to call her right after this actually and just thank her. What you have to do for your kid -- it's an amazing responsibility and the biggest joy ever."
After a relatively quiet 2015 focused her son, Jessica returns to the screen this year with three new films, "The Devil and the Deep Blue Sea," "A Kind of Murder" and "Spark."
Justin, meanwhile, is facing a copyright infringement lawsuit with will.i.am over claims that their 2006 track "Damn Girl" is too similar to the disco song "A New Day Is Here At Last," according to TMZ.