This Is Not a Love Story 2002 one on netflix

In an inner city loft Belinda(Smuts-Kennedy) lives her dream of being a writer. Across the street is Suzanne (Rutter), a painter who has the success Belinda craves. Suzanne lives with Tony (Lovatt), an actor frustrated by his dead-end role in a soap, who is looking for a way out. Soon Belinda is caught up in a love triangle – which is just the experience she needs to inspire her first novel. This is about sex and love, success and failure, creativity and careers.