Banging a rock star can be a really expensive proposition ... so Michaele Salahi is about to find out.
TMZ has obtained a copy of the prenup between Michaele and Tareq. Under the terms, if Michaele commits adultery, she automatically loses her right to any money or other property they accumulated during their 8-year marriage.
Under the prenup, by moving out, she's also forfeited her right to spousal support.
The good news for Michaele ... rock stars are generally loaded. The bad news ... they usually dump older women.