Khloé Kardashian's boyfriend Tristan Thompson has a son.

The 25-year-old basketball star's former girlfriend Jordan Craig - whom he split from during the pregnancy - gave birth to the little one in Los Angeles last week and it's now been revealed he's a baby boy, a source confirmed to 'Entertainment Tonight'.

Although it's no doubt tough to be in a relationship with someone who has a child with someone else, Khloé is seemingly keen to get stuck in as she hired a private jet for Tristan last week to ensure he got to Los Angeles from Cleveland, Ohio, in time.

A source said recently: ''Khloé's really understanding about Tristan's situation - she's a little embarrassed that her boyfriend is having a baby with someone else, but it happened before she hooked up with Tristan. She wants him to be a responsible dad, but she wants to keep it all on the down low.''

The 32-year-old reality TV star found out her boyfriend was having a baby with Jordan - the cousin of Kevin Hart's wife Eniko Parrish - after they started dating but decided to plough ahead with their relationship anyway and be supportive.

A source said at the time: ''Khloe and Tristan are doing really well. They are exclusive. There is a lot of chemistry between the two of them and they are happy.''

Khloé's family - including her sister Kim Kardashian West, Kourtney Kardashian and half-sisters Kylie and Kendall Jenner - aren't afraid to voice their opinions when it comes to her love life but it seems, despite fathering a child by someone else, Tristan has already got the seal of approval by the blonde beauty's mother, Kris Jenner.

The 'momager' said: ''They [Khloé and Tristan] are really cute. You know, she's having a good time. He seems like a really nice guy. I think just with any relationship, just in life, I think it's about chemistry and about values. You know, about how two people get along, know how that goes!''