The 25-year-old model posted on his Instagram Story photos of the 39-year-old Keeping Up With the Kardashians star from one of their vacations together.
"Let's not forget this beautiful woman inside and out," he wrote. "I'm not the type of man that forgets moments like that. You [are] an amazing woman and mum and I hope you will find happiness for you and your childrens. It's all love at the end of the day...we don't know what can happen tmw so there you go."
E! News reported in August that Kardashian and Bendjima broke up after dating for almost two years.
Recently, Kourtney has been reportedly dating Grown-ish actor Luka Sabbat. In November, she celebrated his 21st birthday with him, also attending Sean "Diddy" Combs' 49th birthday party together.
"She doesn't see it becoming an exclusive committed long-term relationship like she had with Younes," a source revealed to E! News at the time.
"But she never thought that would happen with Younes either. She's not over-thinking it. She just knows she's very happy when she sees Luka and is always excited to see him again."