• Khloe Kardashian posted a throwback photo of herself on Instagram
  • Tristan Thompson commented on his ex's post with three heart-eye emojis
  • The ex-couple continues to co-parent their daughter True, a source told People

Tristan Thompson left a flirty comment on Khloe Kardashian's Instagram photo Wednesday, about a month after they announced their split. The comment caused quite a stir with fans, who flocked to the comments section to take a swipe at the NBA star.

Kardashian shared a photo of herself by the sea Wednesday, writing, "Daydreaming [sic] of being here." The post was a throwback photo of the "Keeping Up with the Kardashians" alum, showing her standing on the seaside and wearing a sheer blue long-sleeved bodycon dress.

Eagle-eyed fans were quick to notice that among the commenters of the post was Thompson, who left three heart-eye emojis on his ex's photo. The comment angered fans, with some even saying he should leave Kardashian alone.

"Leave her alone," one fan told Thompson. "Block him sis!" another fan commented.

It wasn't the first time Thompson made a social media uproar since his relationship with Kardashian ended. Last month, just a week after they announced their split, he also made some kind of public display of affection for Kardashian when he greeted her for her 37th birthday.

In his tribute, Thompson called his ex "not just an amazing partner, mommy and best friend but also being the kindest, caring, and most loving human being I've ever met." "Your love and spirit is [sic] contagious to all who've met you. Thank you for always being there for me and putting our family first. I love you so much. Have an amazing day," he wrote.

Kardashian and Thompson broke up after Instagram model Sydney Chase claimed in April that she had slept with the Boston Celtics player last fall, while he was still with Kardashian, reported TMZ. News of their split came after reports claiming Thompson had been spotted partying with several women in Los Angeles.

Earlier this week, a source told People that Thompson has been trying to get Kardashian back. "He hasn't given up and he doesn't think the door is closed," the source told the outlet.

Another source told People that Kardashian and Thompson continue to co-parent their daughter True despite their split.

"Khloe is doing okay," the source told the outlet. "True will always be her first priority and ultimately she's focused on a healthy family for her daughter, so Tristan will always be a part of Khloe's life."

Tristan Thompson
Tristan Thompson of the Cleveland Cavaliers warms up before Game Six of the 2018 NBA Eastern Conference Finals against the Boston Celtics at Quicken Loans Arena on May 25, 2018 in Cleveland, Ohio. Getty Images/Jason Miller