The NBA star showed up to True's party on Sunday and seen in a video on Khloé's IG.
In the clip, Khloé is seen holding their child while Tristan hangs on the sideline. He attempts to make contact with the one-year-old and engage, but KoKo doesn't appear to be very welcoming.
Changing the focus to the party guests, Khloé is more engaged with the partygoers than Tristan.
This is the first time we've seen them together since Tristan hooked up with Jordyn Woods back in February. Since then, Khloé's spoken openly about the betrayal, unfollowing her baby daddy and saying the situation "broke her."