Tiger Woods Mistress Jaimee Grubbs UPDATE: Listen to the alleged voicemail and read the steamy purported sex texts Tiger Woods sent to Jaimee Grubbs.

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Is reporting that cocktail waitress Jaimee Grubbs has told Us Weekly that she had a 31-month affair with Tiger Woods. Grubbs, 24 and best known for her stint on VH1’s “Tool Academy,” claims to have voicemails and text messages to corroborate her story of an affair.

According to Us Weekly, Grubbs has more than 300 text messages from Tiger — who married Elin Nordegren in 2004.

The magazine, which comes out tomorrow, claims Grubbs had 20 sexual encounters with Tiger.

On Wednesday UsMagazine.com promises to post a voicemail Woods left Grubbs. In the voicemail, he supposedly tells Jaimee that he suspects his wife Elin knows about his affair.