Well I watched a movie just by skipping through the channels I didn't pay attention to what it was called it seemed interesting, it was based in a night city a man was going to hotels having sex with certain woman because he joined a sex programme he ended up having sex with an oldish kind of woman an then stuff was haunting, I didn't get to watch it all but it wasn't a sex filled movie only it was that he was having sex in hotels an then he was going out an he met a certain girl who had a strange thing about her that she left at times after they had sex... any help ?

This is a wild guess:

Deception (2008)
starring Hugh Grant, Ewan McGregor, Michelle Williams |
IMDb synopsis:
An accountant is introduced to a mysterious sex club known as The List by his lawyer friend. But in this new world, he soon becomes the prime suspect in a woman's disappearance and a multi-million dollar heist.

Deception (2008) - IMDb