It Pays To Be Peter Cook's Mistress

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Peter Cook's mistress is ready for her 15 minutes of fame.  While she was helping to break up a marriage, she also was working on a music career. 

Well all those cash payments she received from Cook in exchange for sex must have paid off because she's debuting her first music video tomorrow.

According to Ok! a sample lyric goes like this: "I once was hurt before. I've got to move on. I've got to be strong." 

She reportedly has gotten a lot of offers for record deals too. You can check out Diana's music video on Extra tomorrow night and see if she has what it takes.