 He had an affair with Donna Abandando, the squad receptionist, and Medavoy's existing marriage made the relationship difficult.After the pressure became too much for Abandando to cope with, she ended things with Greg, who tried unsuccessfully to return to his marriage.He was later attracted to coworker Abby Sullivan - who revealed that she was a lesbian, and that her partner Kathy and she were interested in having him father their child through artificial insemination.