Don't know the name of the movie?

I saw a movie a while ago and I can't remember the name of it I just remember that it's about a girl who's chatting with a boy who's actually an old man. She meets him, and gets raped I think and then she says it was OK… And at the end you think they found him so the movie is about the risk of chatting with strangers online. I also remember she use an iPhone 3gs I think so it should be in that time. Please help that movie was great and I think the father of the girl was maybe Jeff goldblum or Clive Owen or somebody else

Trust with Clive Owen as the father

http://www.imdb.com/...tt1529572/

Trust 2010