Lamar Odom and Khloé Kardashian’s marriage has been rocked by two major cheating scandals in less than four months.

In the new issue of In Touch, on newsstands now, LA entrepreneur Jennifer Richardson — one of the alleged “other women” — sits down for an in-depth interview about her yearlong affair with the NBA star.

The mistress tells In Touch she believed that Khloé became aware of their affair at some point and they wanted her out of the picture so the clan had her followed.

They had private investigators following me for weeks,” claims Jennifer. “I was very, very intimidated and scared.”

In April, just days after their affair ended, Jennifer saw Khloé at a Clippers game. Jennifer sat courtside, while Khloé was two rows behind her with mom Kris. “Khloé never said a word to me,” Jennifer recalls, “but she kept cutting her eyes at me. That’s when I knew she knew.”

Jennifer believed Khloé was having Lamar trailed, too.

“She’s constantly looking for Lamar and trying to find out where he is, calling him, calling his assistant,” says Jennifer. “Lamar would just hit ‘ignore.’”

She claims Khloé would call the Staples Center — where Lamar plays for the Los Angeles Clippers — to get details on his schedule, and even used his iPhone GPS to track his whereabouts. “Khloé and her mother caught him with another girl before me,” she adds. “That’s why he went back to a BlackBerry.”

For more inside In Touch’s exclusive sit-down interview with Jennifer Richardson, pick up this week’s issue of In Touch, on newsstands now.

Have a tip? Send it to us! Email In Touch at contact@intouchweekly.com.