This is how it goes, This girl works at this art place, she has multiple personalities? Her dad or step dad ends up raping her when she passes out. Her boyfriend or Guy friend walks in after all that. It was on HBO, SHOtime, or one of those networks.. I believe its 1995 or higher... not sure.. Could anyone help out? I don't know any of the actors names..

I have been looking like crazy and can't seem to find that movie so maybe try here
multiple personality movies - Movies tagged with 'Multiple Personality'

Sorry I couldn't be much more help
Or maybe try here Advanced Movie Search at filmsandtv.com