Calabasas, California - Lamar Odom's flirtatious compliment on Khloé Kardashian's Instagram pic apparently rubbed Tristan Thompson the wrong way!

These two athletes have proven that time – and scandals – are irrelevant when it comes to matters of the heart.

On Friday, Khloé posted a wet and sultry photo on her IG page.

The 37-year-old sported a teeny bikini that showed off her curves as she stood underneath an outdoor shower.

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Both of her exes wasted no time in sharing their thoughts about the thirst trap photo.

Tristan wrote several heart emojis, while Lamar commented "hottie" with fire and heart-faced emojis.

However, Tristan, who Khloé recently split from for the second time, wasn't too pleased with her ex-husband's remarks.

The 30-year-old NBA star clapped back to Lamar, "God brought you back the first time. Play if you want, different results."

Yikes!

The Celtics player was referring to Lamar Odom's nearly fatal overdose in 2015 when he was found unconscious at a Las Vegas brothel.

Khloé was still married to the former NBA player at the time, leaving her to be in charge of his recovery as he emerged from a coma. The ex-spouses officially divorced in 2016 after four years together.

For Tristan to bring up Lamar's painful past is definitely a low blow – especially since it should also be noted that Khloé and Lamar have been estranged for some time.

Yet, this isn't the first time Tristan has been creeping on his ex's page recently.

On Wednesday, Tristan Thompson left a flirty comment on Khloé's beach pic as he also posted a touching tribute for the reality's star birthday.

Looks like Tristan is willing to challenge Lamar, or any man, for Khloé's heart – and he's definitely not playing fair.

But, Lamar also isn't one to back down from a challenge – just ask Aaron Carter.