The 30-year-old NBA star spent his Fourth of July holiday partying it up at Kardashian hot spot Nobu Malibu, where clothing company Revolve was hosting a bash in collaboration with Los Angeles hot spot Bootsy Bellows, called "Red, White, and Bootsy."
Though it's unclear if the Boston Celtics power forward/center met up with friends inside, he most certainly did not arrive at the event with his Keeping Up with the Kardashians star ex.
Sporting his signature "unbothered" look, Tristan also wore a white short-sleeve button-down shirt and black sunglasses – and showed up to the soirée with a styrofoam cup in hand.
For her part, Khloé was elsewhere, hanging out with sister Kourtney Kardashian's kids while enjoying her other sister Kendall Jenner's 818 Tequila.
Though Thompson gave Kardashian a heartfelt birthday shoutout on Instagram late last month, Khloé did not publicly acknowledge Tristan on Father's Day.
It's safe to say things between the exes are not too peachy right now.
Weeks prior, the professional athlete was accused of cheating on the Good American founder after he was caught sneaking into a bedroom with three women at a house party in L.A.
Sources said Tristan reappeared 30 minutes later, looking "disheveled," while another partygoer claimed he was also seen grabbing a girl's butt during the event.
While KUWTK fans felt sympathy for Khloé, Page Six reported that the duo had actually broken up weeks prior to the alleged incident.
It's a convenient narrative considering the two looked pretty cozy at lunch together with 3-year-old daughter True Thompson, just days before you-know-what hit the fan.
Though she has not spoken about the breakup or scandal publicly, Khloé did post a cryptic message to her Instagram after her baby daddy's alleged escapades made headlines.
Channeling one of her favorite writers, Kardashian told her 159 million followers that she was "at peace" with her life.
However, that doesn't mean it's over for the duo, as Radar learned that she would "forgive him in a second."
According to our sources, "Khloé just can't quit Tristan. Some of it is that they share a 3-year-old daughter together, but most of it is that she loves him."
Despite being served with legal papers, Kimberly has not showed up to any court hearings, so Tristan's legal team asked the court to award them a default judgment in the amount of $102,000.
Thompson claimed Alexander's public accusations had cost him a ton of endorsement deals and ruined his reputation, but he failed to mention that he's been accused of cheating on Kardashian numerous times in the past.
The judge presiding over the case has yet to officially grant a default judgment but said he was leaning toward it; however, since Tristan failed to prove he had lost any endorsement deals because of Kimberly's claims, he'll likely walk away with $50,000.
Only problem is, she says she doesn't have the money – even though she just hosted an event at The Hustler Club strip club in New York.