Despite ongoing allegations of Odom's cheating and drug use, Khloe Kardashian was desperate to save her marriage by actively trying to get pregnant with his baby.

Kardashian "truly believed that if she got pregnant, it would cause Lamar to change his ways," a source told RadarOnline.com.

"Khloe thought having a baby together would bring them closer together as a couple. It was all she ever wanted, to have Lamar’s baby and have their own family," the source added.

Despite her fertility struggles, Kardashian told family and friends she is actually thankful she never got pregnant.

According to new reports, Kardashian reportedly told her NBA hubby that she wanted to file for divorce on September 27: the couple’s fourth wedding anniversary.

“She called him on their anniversary and told him she’d be filing for divorce,” an insider told US Weekly. “She wanted to give him fair warning. Khloe was very firm. She said she will be filing soon and she thinks it’s best they move on. Khloe told Lamar she hopes he gets the help he needs.”

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Khloe Kardashian, Lamar Odom