THE man who has accused Peter Slipper of sexual harassment first advised the suspended parliamentary speaker to manoeuvre for the position well before he started working in his office.

Fairfax Media has obtained 200 pages of new text messages that reveal James Ashby and Peter Slipper had a ribald relationship with frequent use of coarse language, discussions about Mr Ashby's sexuality, dismissive references to female genitalia and political war gaming to ''destroy'' Mr Slipper's rival, Mal Brough.

The documents also reveal Mr Ashby developed a long and close relationship with Mr Slipper and his family before he was employed as a media adviser in December.

The new evidence shows Mr Slipper was supportive of Mr Ashby's sexual orientation, sending him a message that said: ''You motivated me to see some ladies who have gay kids seeking a change in [gay marriage laws].''