constand insisted that they were passes from cosby that she rebuffed. which made sense to diana parsons who says her sister has no interest in romantic interludes with men. andrea was 16 years old when she told us that she was gay. reporter: cosby s attorneys used phone records to try to prove a romantic relationship. pointing to more than 50 calls constand made to cosby after the alleged assault and before march 31 when constand left temple. i found to be the game changer. there were calls after the so-called sexual encounter, call after call after call after call. reporter: constand testified she was just returning calls from cosby, a temple trustee. and a cnn special report, the case against cosby, airs tonight