Disturbing text messages between accused BDSM-crazed tycoon Howard Rubin and his longtime personal assistant were laid bare Friday as federal prosecutors charged the pair with a decade-long sex-trafficking scheme.

Rubin , 70, brazenly memorialized his twisted sexual deviances in missives exchanged with 45-year-old staffer Jennifer Powers and others — including some of his alleged victims — giddily bragging about his love of hurting women, court papers charged.

Here are some of the sickening messages revealed by Brooklyn federal prosecutors as Rubin and Powers were hit with a 10-count indictment: 4

‘Did you shock her?’

In one horrifying exchange in 2015, when the retired financier Rubin allegedly told Powers that he had his way with a woman tied up to a cross.

The dedicated sid

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