The 36-year-old reality star shared a cute photo of her now 32-year-old beau with son Mason on Instagram, writing, "Happy happy birthday to my handsome, hilarious, sweet soul mate."
Kardashian and Disick went out to eat at one of their favorite restaurants, Nobu, to mark the occasion. The latter also received birthday love from Kardashian's sisters, Kim and Khloe Kardashian, and mother, Kris Jenner.
"Happy Birthday Scott!!!!!! You are an amazing son, an incredibly devoted dad, an awesome boyfriend/partner and one of the funniest guys I know...we are so blessed you are part of our family and I love you," Jenner captioned a selfie of herself with Disick.
Kardashian and Disick have been together since 2006, and have three children together: 5-year-old son Mason, 2-year-old daughter Penelope and 5-month-old son Reign. The couple currently star on E! reality series Keeping Up with the Kardashians, which airs Sundays at 9 p.m. ET.