joline burdge says dennis hastert was a mentor to her brother steve when steve was in high school and she says that steve felt he couldn't go public with what happened to him because he didn't think anybody would believe him. there's been no response from dennis hastert since the allegations of sexual abuse and financial fraud came out last week. but the sister of one of the former house speaker's alleged victims is speaking out exclusive to abc. >> he damaged steve more than any of us will ever know. >> reporter: joline burdge says her brother was the equipment manager when hastert coached his high school's wrestling team. she says her brother told her in 1979 that he was gay. >> i asked him steve when was your first same sex experience and he just looked at me and said it was with dennis hastert and i just -- i know i was stunned. >> reporter: burdge says hastert became a kind of father figure for her brother. >> i said why did you ever tell anybody steve? i mean, he was your teacher. why didn't you ever tell anybody. >> reporter: and he just looked at me and said who is ever going