in that episode it is revealed that kyle is the younger brother of dr. leo julian, and that the two do not get along. kyle also tells fellow intern dr. claire simpson that he is gay. the july 29, 2008 episode "" establishes that leo had been adopted around the age of 4 or 5. in "" (9/23/08), their mother patricia notes that she and her husband adopted leo because they believed she was unable to have children, and she had subsequently become pregnant with kyle. kyle becomes romantically involved with a liver transplant patient named eric whitlow, played by chad allen.