Khloé Kardashian and Tristan Thompson are expecting their second child together via surrogate.

This week, multiple sources confirmed the news to E! Online, sharing that the reality TV star, 38, and basketball player, 31, will welcome another addition to their family later this year.

"We can confirm True will have a sibling who was conceived in November," Kardashian's rep told the publication.

"Khloé is incredibly grateful to the extraordinary surrogate for such a beautiful blessing. We'd like to ask for kindness and privacy so that Khloé can focus on her family."

According to sources, the baby - which is supposedly a boy - was kept quiet not only for their surrogate's sake but also "to protect [Khloé's] mental health from judgement from the public as a result of Tristan's actions."

Watch Kylie Jenner share the moment she revealed she is afraid of her ex-best friend, Jordyn Woods, on Keeping Up With The Kardashians. Post continues after video.

Kardashian and Thompson have been on-and-off-again since 2018, and most recently split after he welcomed a child with another woman.

Here's a look back at everything that's gone down between the couple.

Cheating scandal 1.0: Tristan Thompson and Khloé Kardashian.

Khloé Kardashian and Tristan Thompson started dating in August 2016.

Only a few months later, allegations surfaced that Thompson had started dating the reality star while he was still in a relationship with the mother of his first child, Jordan Craig.

Craig gave birth to their son, Prince, in December 2016 - four months into Thompson and Kardashian's relationship.

However, the NBA star denied he ever cheated on his pregnant ex.

"When I met Khloe, I was SINGLE," he wrote to his followers on Twitter in a 2019 tweet.

"The negative comments that are constantly being directed toward her are unnecessary. She does not deserve all this backlash for my wrongdoings. Both Khloè and Jordan have been nothing but great mothers to my kids."

Also, when I met Khloe I was SINGLE. The negative comments that are constantly being directed towards her are unnecessary. She does not deserve all this backlash for my wrong doings. Both Khloè and Jordan have been nothing but great mothers to my kids.

— Tristan Thompson (@RealTristan13)

Kardashian made a statement herself on Instagram, writing: "My truth is: I met Tristan because HE CHOSE to go on a blind date with me. A mutual friend set us up. After going on some dates, Tristan told me that he had an ex that was pregnant."

She continued: "Obviously, I was reluctant about us continuing to date or start a relationship. He pleaded with me that the relationship was over long before we met. He had me talk with his most inner circle. He showed me physical proof (correspondence between the two) and had me on calls with his lawyers to prove his point. His best friends, business associates, and even his mother told me, him and his ex were broken up before we met."

In court documents obtained by RadarOnline though, Craig's story differed. She admitted the timing of the relationships were a devastating reality for her.

"Every day several articles were published worldwide mocking my new unfortunate reality and my pregnancy would now become one of the most popular gossip headlines due to the woman Tristan was now publicly dating during my pregnancy," she said, further admitting she had faced a number of pregnancy complications due to her ex's cheating.

"Tristan insisted he would change for our family, and tried to get back together on numerous occasions," she added.

Cheating scandal 1.5ish: Tristan and CCTV footage.

In April 2018, footage from the year prior was leaked toTMZshowing Thompson allegedly motorboating and kissing two women at a hookah lounge.

At the time, Kardashian was pregnant with their first child, True.

While neither made a statement, it added a serious chink in the armour of their already shaky relationship.

Cheating scandal 2.0: Tristan and Lani Blaire.

That same month, Thompson was caught speaking intimately with another woman in a brief clip taken at rooftop bar.

Later,