The Principles of Lust (2003)
The Principles of Lust is a 2003 drama movie directed by Penny Woolcock, with a running time of 1h 48m. It stars Alec Newman, Marc Warren and Sienna Guillory.
Crippled by his writer's block, Paul enters into a new, exciting relationship with risk-taking Billy and super-sexy Juliette. As it becomes increasingly tangled, however, he must choose one of them over the other.