Scott Disick Kourtney Kardashian
Scott Disick and Kourtney Kardashian share three children between themGetty

Scott Disick shared a throwback kissing photo with Kourtney Kardashian on Instagram on 18 April to celebrate the reality TV star's birthday. The former partners first started dating in 2006 and are parents of three children. They split in summer 2015, but have remained close friends and occasionally have even fuelled dating rumours.

Disick, 32, posted the photo with the caption: "Happy birthday @kourtneykardash everyone who knows you loves you so much!"

Soon after the photo was posted, the 37-year-old business woman liked the post along with her sister Khloe. The image is from 2009 and shows the two kissing in the ocean.

The Keeping Up With The Kardashians star is currently in Iceland on vacation along with her sister Kim and her husband Kanye West. Kourtney has been sharing photos of her holiday and posted one where she is inside a church. The photo caption read: "Went to the most beautiful church today"

She also posted a photo with family and friends taken on the top of a snow-capped mountain. "Chillin' on a glacier. Literally," she wrote.

Meanwhile, mother Kris Jenner on her daughter's birthday also shared a throwback photo of Kourtney when she was just a baby.

She captioned the photo: "Happy Birthday tomorrow beautiful @kourtneykardash!! I know it's crazy but I remember this pic like it was yesterday.. You have brought so much love, joy, and happiness into my life and I'm proud to be your Mom.. You teach all of us everyday what it means to be an amazing daughter, Mom, sister, friend, and a genuinely beautiful human being."

She continued: "Thank you for being such a bright light and an inspiration to me every day.. You are kind and patient and have the biggest heart and I love you more than you will ever know. You will always be my firstborn who captured my heart.... Oh, and I'm really sorry about this outfit I put you in....I love you, mommy #love #blessed #mybaby".