Jimmy was a friend of Claire Fisher's while she attended art school. He wanted to date her but eventually realized that she was not interested in him in that way. However, they had sex and he was responsible for giving her her first orgasm.
He had a habit of doing drugs and drinking but introduced Claire to her first gallery owner. They remained friends until she quit art school.
Many of Claire's friends believe he and Russell Corwin had a brief fling which the latter openly denies.