Scott Disick has three children with her older sister. But that didn't stop him from describing Khloe Kardashian as his '#WomanCrushWednesday'.

The 35-year-old ex of Kourtney Kardashian made the comment in an Instagram post that included a photo of the reality star, 34, wearing a sheer fishnet catsuit.

https://www.instagram.com/p/Bu-NmnygQVG/

Scott is dad to Kourtney’s three children: sons Mason, nine, and Reign, four, and daughter Penelope, six.

He's been dating Sofia Richie, 20, since May 2017.

Khloe, meanwhile, has been dealing with the end of her relationship with Cleveland Cavaliers player Tristan Thompson, the father of her 10-month-old daughter True.

The two ended their romance amidst another cheating scandal after Thompson, 28, was accused of kissing Kylie Jenner's BFF Jordyn Woods at a party.

Despite the ups and downs in their private lives, Khloe and Scott have remained good friends, leaning on each other for support when times get tough.

The two, who star in Keeping Up With The Kardashians, with the rest of Khloe's family weren't always so close, though.

Khloe told Complex in 2015, after his breakup with Kourtney: 'We’re the best of friends, but what’s crazy is how much I hated him before.'

'Overall I love his progression and growth. You can’t deny how much he loves Kourtney, and I do think he tries. We’re very much involved in each other’s lives.'