Khloé Kardashian's Ex Lamar Odom Feels 'Terrible' for Her — All About His Own Infidelities

Before Tristan Thompson, Khloé Kardashian dealt with allegations of infidelity during her nearly eight-year relationship with ex-husband Lamar Odom

While pregnant Khloé Kardashian‘s due date quickly approaches, speculation about Tristan Thompson‘s alleged infidelities has been rampant, with a source telling PEOPLE that the Cleveland Cavaliers player is “a serial cheater.”

But this is not the first time the Keeping Up with the Kardashians reality star, 33, has faced similar rumors. Before she was romantically linked to NBA boyfriend Thompson in September 2016, Kardashian dealt with allegations of extramarital affairs during her nearly eight-year relationship with ex-husband Lamar Odom.

A source close to Odom, 38, tells PEOPLE now, “Lamar feels terrible for Khloe. He wasn’t sure if he should reach out and see how she’s doing. He feels for her.”

Kardashian and Odom wed on Sept. 27, 2009 — one month to the day after they met (and nine days after getting engaged) — but the marriage fell apart after the former basketball player’s cheating scandal and drug relapse, which led Kardashian to file for divorce in 2013.

Cheating rumors against Odom first circulated in January 2012, when a tabloid report claimed Odom cheated on Kardashian with a woman he met at a Washington, D.C., strip club. And in July 2013, the pair were confronted rumors claiming Odom had been unfaithful to Kardashian after playing a game for the Dallas Mavericks.

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“Love is blind … Lamar was so great at making me feel like I was the only one and I’m this princess. I never speculated cheating … so I didn’t know about cheating … until before the DUI [in 2013],” Kardashian told Howard Stern in January 2016.

“He was so good. So nothing was on his cell phones, [but] he had an assistant. They were all on his assistant’s phone, so he was really crafty,” she recalled as Stern asked the former Kocktails with Khloé host: “Doesn’t that feel awful when the assistant knows, and everyone knows?” To which Kardashian agreed, “Oh, it’s disgusting.”

RELATED GALLERY: Khloé Kardashian & Lamar Odom: A Timeline of Their Relationship

“But all these rumors kept coming out in the weeklies, and as much as I know they’re bull—-, where there’s smoke there’s fire. Something has to be right here,” Kardashian revealed. “It is humiliating on any level, but I found out he was cheating on me the majority of our marriage, I just didn’t know.”

In October 2015, Odom was rushed to the hospital after being found unconscious in a Nevada brothel. Near death, he spent four days in a coma, and Kardashian rushed to his side and called off their divorce proceedings temporarily.

Imeh Akpanudosen/Getty; JB Lacroix/WireImage

Months before, in July 2015, both stars had signed divorce papers, but the judgment had not yet been entered in court by the time Odom was hospitalized; thus, they were technically still legally married. As a result, Kardashian was making all of Odom’s medical decisions.

Upon his recovery, Odom completed a 30-day drug rehab program.

Khloé refiled for divorce once Odom recovered from the Nevada incident, and their split was finalized in December 2016.

In July 2017, Odom penned an emotional first-person essay for The Players’ Tribune in which he touched on how his drug addiction and infidelity tore apart his marriage.

“Anybody who’s lived a complicated, drug-infused life like I’ve lived knows the cycle — with women, cheating on my wife, s— like that,” he wrote.

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One of his “darkest” moments, he admitted, was when Kardashian caught him doing drugs with another woman. “I was in a motel room, getting high with this chick, and my wife (at the time) walked in. That probably was like rock bottom. First of all I was in a motel. A motel,” he remembered.

“I’m a millionaire. I’d made it out of Jamaica, Queens, and won two NBA titles. And I’m in a motel, with some random person, doing coke. But I just wanted to get high with this girl, and I had no other place to go. I couldn’t take her home. You know, I was being a scumbag,” he wrote.

Odom still thinks highly of Kardashian, who is expecting her first child — a baby girl — with Thompson.

Asked in January by BET’s Mancave about Khloé being pregnant, Odom said he’s “happy for her,” adding, “She took care of me, she’ll be a good mother. For real. She’s a great woman.”

Now, a source tells PEOPLE that when Kardashian got together with Thompson, her sisters were “really happy to see Khloe so excited about someone again because she hadn’t felt that way about a guy since Lamar. Eventually Tristan won over her family too … he really seemed dedicated to her, so this must be a shock to everyone.”

Updated by
Melody Chiu

Melody Chiu is a Senior Editor for PEOPLE. She has been with the brand since 2009, editing, writing and reporting across all entertainment verticals. She oversees PEOPLE's music and events coverage and has written cover stories on Taylor Swift, Selena Gomez, Melissa McCarthy, Blake Shelton and Sandra Oh. The Los Angeles native graduated from the University of Southern California and has appeared on Extra!, The Talk, Access Hollywood and Good Morning America.

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