The 'Keeping Up with the Kardashians' star and the NBA player - who have two-year-old daughter True together - split last year after Tristan kissed Kardashian family friend Jordyn Woods at a party.
But after Khloe and Tristan have been spending more time together to co-parent their daughter, sources claim the bond between them has grown once more, and they're now officially giving their romance a second try.
An insider told People magazine: "She loves having him around. He has the best relationship with True. And he has been amazing to Khloe too. They are very much together and Khloe is beyond happy. They have been living in kind of a bubble and Khloe enjoys it."
However, the couple's romance is likely to be tested once the NBA season begins and Tristan has to travel around the country with the Cleveland Cavaliers.
The source added: "Tristan's traveling was always a concern. This is when he would mess up their relationship. She hopes that Tristan has changed though so they can continue to be together as a family."
Meanwhile, the Good American co-founder recently said she is "really grateful" to be able to co-parent with Tristan amid the coronavirus pandemic without any animosity between them.
Speaking last month, she said: "We're doing a great job and I'm really grateful that we're able to. I come from a family that, you know, my mom and my dad, they would have dinner once a week.
And my stepdad and my dad would play golf once a week together. So, I come from a family that ... just because people aren't together doesn't mean you have to be rude or they're out of your life. You share children with them and you want to kind of have this blended family. So, I'm just used to that. I'm sure it's so weird to so many people."
And the 36-year-old television personality thinks Tristan has been "amazing" and "so helpful" during the current health crisis.
She added: "He's been so amazing during this quarantine, he's been so helpful. You know, when you can't rely on so many other people's help, it's so great that you have like, essentially he's your partner, he's True's dad. And I need his help more now."
I’m wise enough now to know, you came into my life to show me just what it means to be an incredible person. I appreciate how I am able to learn from and grow because of you. I thank God for the beautiful and loving woman you are to everyone, especially our daughter True. You deserve the world Koko! True and I love you mama. Happy Birthday @khloekardashian ❤️?
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