. >> reporter: when ryan kendall was 13 his mother read his diary and discovered he was gay.nning of the most painful years of his life. >> for years i thought that god hated me because i was gay. >> reporter: ryan says his parents were determined to change him and signed him up for repairative therapy. otherwise known as narth, the e reparative therapy has been used to turn potentially gay children straight. >> every day i heard, this can be fixed. >> did you believe that? >> i never believed it. just like i know i'm short and hispanic, i knew that would never change. it is part of my core fundamental identity. so the parallel would be sending me to tall camp and say if you try really hard you can be 6'1". >> ryan was treated by a clinical psychologist who was associated with narth. >> this is something that your family doesn't want for you. >> at his office outside los angeles we asked him if he remembered treating ryan kendall about 14 years earlier. >> i'm not familiar with the name at all. >> his parents have provided bills from your office, there were checks written to

. >> reporter: when ryan kendall was 13, his mother read the diary and discovered he was gay.s the beginning of the most painful years of his life. >> for years, i thought that god hated me because i was gay. >> reporter: ryan says his parents were determined to change him. they signed him up for reparative therapy with the national association for research and therapy of homosexuality. otherwise known as narth. therapy to change sexual orientation is used for decades to turn potentially gay children straight. >> every day i hear this is a choice. this can be fixed. >> reporter: did you believe that? >> i never believed that. i know i'm gay just like i know i'm half and half hispanic and never thought the facts would change. part of my identity. so the parallel would be, sending me to tall camp and saying, if you try really hard, one day you can be 6'1". >> reporter: ryan says he was treated by a clinical psychologist who today is still associated with narth. >> the constant refrain is religious one. this is something that makes god cry. that this is something your family does