I thought the premise of this book was good. The start was ok but then it all went to pieces.
The basic summary is:
Sex,
Time travel,
Violence,
Sexual assaut,
Constant leering,
Sexual assaut,
Violence,
Sex,
Sexual assault,
Violence,
Stories of violence,
Violence against a partner
...

I didn't find that there was much to the story and the barrage of violence and sexual assault was just too much.