Man of Flowers

In my language, there's a different word for erotic and non-erotic love. English has just one word for the two. And Charles, the main character in this story, doesn't even make a distinction. The attraction he feels to flowers or classical music is erotic, as is his attachment to his mother; at the same time, he's unable to consummate a sexual relationship. He's a profoundly lonely person, who writes letters to himself and buys 'human relationships' in the form of a doctor or a stripper to whom he hardly talks. Lisa, in turn, is just as lonely: her boyfriend hardly talks to her, only takes her money to spend on drugs. This film is about the isolation of modern people, the impossibility to create relationships. Charles sublimates this longing into a fondness for all art and beauty, others escape into drugs or pointless 'creation'. And the question arises: why am I watching this film? What am I substituting with it?