Look Out, Jeff Bezos! Mistress Lauren Sanchez's Ex-Fiancé Says She Cheated & Kept The Ring

Jeff Bezos shocked the nation with news of his affair with married anchor Lauren Sanchez. But as RadarOnline.com has learned, there was one person who was anything but surprised about the twisted infidelity scandal: the bombshell's disgruntled ex-fiancé.

Former American football star Anthony Miller told The Sun that Sanchez, 49, has always been a cheater. The athlete — who was in a four-year relationship with the brunette beauty — admitted that he "couldn't really trust her," and eventually dumped her for cheating on him while they were engaged.

"She gets around. She was cheating on me with other guys," he said. "I found out when I looked in her diary, and I found out more after I broke up with her."

After he dumped her, Miller, 53, claimed shameless Sanchez kept the diamond ring he proposed to her with!

"I kind of gave it to her to shut her up. I gave her the engagement ring to kind of chill out," he said, adding that he didn't say anything when she refused to return it because she was always "kind of cheap."

Miller's allegations come days after Sanchez was identified as Bezos' longtime mistress. The TV star was reportedly involved in an intimate relationship with the Amazon CEO, 55, for about eight months, despite the fact that the two remain married to other people.

This January 9, moments after news broke about their affair, Bezos announced his $160 billion divorce from wife-of-25-years Mackenzie Bezos. And soon enough, The National ENQUIRER exposed his string of raunchy texts to Sanchez.