Please help me find a story

[Kinkie_April]

Im new to these boards but have been visiting this site for a few months now. When I first found the site I read a really good story, but now I cant find it again. The storyline was that one girl was going out with a guy but had a bit of a thing for his flat mate. She begun wearing her boyfriend's baggy sweaters when she had breakfast with his flat mate and eventually sweaters with holes in to begun seducing his flatmate. One night she got her boyfriend really drunk and had sex with him but left the door slider things open so the flatmate could see them from his room...and I think eventually she had sex with the flatmate.
It was really good, anyway someone could help me with the info to where I can find it on the site?
Thanks loads
xx