True Romance(1993)

Director:Tony Scott
Clarence has a boring lonely life and works in a comic books store. His life will be radicaly changed as he meets Alabama Whitman, a prostitute, and falls in love with her.
From this point and a tarantino-esque action type is a small step. Things precipitate in a cascade effect when he kills Alabama's pimp and stoles his cocaine (the pimp stole it from others too).
Great action, mexican standoff, some comic scenes(Bronson Pinchot), great actors(Christian Slater, Patricia Arquette, Dennis Hopper, Gary Oldman, Brad Pitt, Christopher Walken), great writer ( Quentin Tarantino)...and what else? oh...and romance. If you are a Quentin Tarantino fan, this is a must see.