Khloe Kardashian’s birthday has not always been a happy occasion.

The Keeping Up With The Kardashians star is celebrating her 36th birthday this weekend – which is sure to be a joyous affair with her daughter True and famous family – but sadly the day holds a heartbreaking memory.

When reality personality Khloe was married to athlete Lamar Odom, 39, she was hurt by his numerous infidelities and he even cheated on the beauty on her 29th birthday.

She later revealed the pain and torment it caused and told how it led to her lying to her family and friends and spending the day alone.

Khloe shared the horrible revelation in a 2014 episode of KUWTK during a candid chat with her sister Kourtney Kardashian.

She vented to her sibling: “Let me tell you something. Last year on my birthday I lied to everyone.

“Because I had to lie and say I was with my husband, when in fact my husband was missing with another girl. Okay?”

She emotionally added: “And I lied and I gave up my Beyonce tickets. That’s how badly I was hiding.

“And I didn’t have a birthday. I was alone and lied to everyone.”

Khloe and Lamar wed in 2009 and separated in 2013 but their divorce was not completed until 2016.

Following the end of their marriage Lamar admitted he was a ‘sex addict’ who slept with ‘2,000 women’, including strippers and prostitutes.

The NBA star came clean in his new memoir, Darkness to Light, and revealed how he was obsessed with sex from the moment he knew about it and that, along with a drug addiction, it almost cost him his life.

Lamar wrote: “I have been obsessed with sex for as long as I can remember… I am a sex addict.”

Revealing details of his obsession, Lamar added: “There were too many strippers to count. It wasn’t a big deal, but often I would pay them. I never thought less of them.”

These habits continued while he was married to Keeping Up With The Kardashians star Khloe and Lamar admits he was ’embarrassed’ when she discovered his cheating and the extent of it.

Speaking to, he said: “I was shocked and embarrassed. I wanted to take it back, but you can’t. [I] wanted to hide it.

“But that sick sin was hard for me to hide… I had a problem.”

Lamar revealed that when he wasn’t having sex, then he would turn to porn for a fix but eventually, even that was not enough.

He added: “[I] ran out of porn to watch! That’s how you know when you are going a little overboard.”

And his sex addiction led to drugs.

Lamar said: “Sex was a trigger for me to do drugs. Because you double up on [that] good feeling.”

It was these addictions that led him to visiting the Love Ranch brothel in Las Vegas in 2015, where he almost died following an overdose.

Lamar said he realised his life couldn’t carry on down this path. He is now free of his drug addiction but said that he is still battling demons but is on a more positive route.

He admitted: “That was the wake-up call. Like, this can’t happen again.”

Following the end of their relationship Khloe went on to date French Montana and then Tristan Thompson – who she welcomed her tot True with.

Cleveland Cavaliers player Tristan has publicly humiliated Khloe not one, but twice by cheating on her while she was pregnant with their child and again with her sister Kylie Jenner’s then-BFF Jordyn Woods – which led to them splitting.

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Ever since then, Tristan has been showering Khloe with expensive gifts and plenty of compliments in a bid to win her back, but she insisted that they were just co-parents.

They are currently isolating together at her Calabasas mansion as they co-parent their two-year-old daughter.

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