"Tristan is around and Khloé is happy. He's very supportive and there’s nobody else in her life," the insider spilled. "The pair are coming off of a great summer together which included a long trip with True."
"They are a family, they leave it at that," the insider added.
The Revenge Body host reportedly called it quits with Thompson in June after Sydney Chase alleged that she hooked up with the 30-year-old in April.
Earlier this month, a source told The Sun that the baller was begging the reality star to take him back and was promising to be on his "best behavior."
"Tristan is around way more than before — he's doing all the classes with True, doing the family dinners and is a very present dad," the insider added. "He's 100% co-parenting and there for everything."
According to the source, Thompson wants a "bigger family." Kardashian has previously said that she wants to give True a sibling.
On Monday, October 11, Thompson posted "Never underestimate the heart of a champion," on his Instagram Story.
In June, an insider told The Sun that the Keeping Up With The Kardashians alum is "in pieces." "It’s such bad timing — just as she started talking about using a surrogate to have a second baby with Tristan, this happens. It’s beyond belief," the source explained.
"I think, for Khloe, having another baby would mean her family was complete — that it no longer mattered what happened between herself and Tristan because she had a little family," the insider continued. "She was trying to ignore all the problems and issues. And he was telling her that's what he wanted too."
Thompson shares 4-year-old son Prince with ex Jordan Craig.