On Friday at his best friend's wedding, Scott Disick dropped hints of him regretting letting Kourtney Kardashian go in his Instagram post.

"When u realize the grass isn't always greener," he wrote, showing a photo of a place card without plus-one that reads, "Scott Disick Guest". Scott seemed to feel lonely for not having a date at the wedding party after getting used to being with Kourtney for nine years.

Earlier that day, the father of three shared a photo with the groom, posting he "couldn't be happier" for his best friend, JJ Corsini.

While Scott was out there celebrating, Kourtney instagrammed she was enjoying the day with half-sister Kendall Jenner. "Off duty supermodels," she joked. "Oh wait, not plural."

The day after Scott's emotional post, she shared a photo wearing a one-piece bikini while boating with her girlfriends.

Although Kourtney has been implying she's fine without Scott, US Weekly reports she's still hoping to reunite with him.

"She wants Scott back," the source revealed. "If he gets to the point where he is really changing she'll let him come home."

"Kourtney's shocked Scott isn't begging her to take him back," the source added.

Scott and Kourtney called it quits last month when Scott was caught by paparazzi getting cozy with his ex-girlfriend, Chloe Bartoli during the Fourth of July weekend in Monaco.

Kourtney then planned to take sole custody over Mason, 5, Penelope, 3 and Reign, 7 months, before she changed her mind and opted for joint custody for the sake of their kids.

Scott broke his silence post-split, during his party appearance at 1OAK Las Vegas telling reporters he's slowly working things out. "[I'm] just taking it one day at a time," he told reporters in July. "With everything going on right now, I need to be positive for myself."

Scott recently took his kids, Mason and Penelope out for lunch at their favorite restaurant, Rosti Café in Calabasas.