In celebration of his mom Lynn Harless's 54th birthday, the "Mirrors" singer posted a throwback snap of himself as a kid hanging out with his mom on a beach.
"Happy Bday to my first partner in crime and the FIRST QUEEN OF THE HOUSE," he captioned the photo. "We have been through so much together and I love you more than words can begin to describe. Everything I am and continue to strive to be is because of you. I love you, Momma! #UandMeVsAnybody."
In the photo, a tiny Justin flashes a smile in swim trucks as he stands next to his mom, who is smiling and sunbathing in a pink bathing suit.
It's no secret Justin and Lynn are very close. Back in 2003, the Grammy-winning singer told Rolling Stone, "We have a very special relationship. She's been my best friend since I figured out who I wanted to be. She's great, and such a fun woman. She goes out with me and stays out later than I do. She's always been there beside me, and I think that's part of my problem with girls. You keep searching for somebody as good as your mother, and that's a losing battle."
Justin stopped searching when he met Jessica Biel, whom he eventually married in 2012. The couple is expecting their first child this year.