The cases 9 and 19 where a negative experience for the boy and are therefore not included in JUMIMA. They can be read in the article linked below or in the book.
Source: Rind, B. Gay and Bisexual Adolescent Boys' Sexual Experiences With Men: An Empirical Examination of Psychological Correlates in a Nonclinical Sample. Arch Sex Behav 30, 345–368 (2001). https://doi.org/10.1023/A:1010210630788
Note. Quotes for cases 1, 3, 4, 8, 10, 11, 14, 18, 20, and 25 were taken from Savin-Williams’ (Savin-Williams, 1997) book—page numbers are provided. Other quotes and descriptions were obtained directly from Savin-Williams. Ages of subjects and older partners when the sexual relations began are provided after the case numbers. A few subjects had additional sexual contacts with other men (Case 1 at age 14, then 15; Case 4 at age 17; Case 9, three more at age 16; Case 21, two more at age 17). Details were not recorded for these episodes.
Case 14 (boy 16, man 23). With a neighbor. “…he felt like my mentor, like my chaperon, that he was going to lead me out of my state of wilderness… We went for a walk and we were smoking cigarettes. He asked if I had a girlfriend and I said, ‘No,’ and then he asked if I had a boyfriend and I said, ‘No.’ Later, at his house, he started kissing me and suddenly everything clicked—this is homosexuality! He declared himself, that is, he had tagged himself. I pushed him away but I wanted to do it. I left … and then I just cried. He apologized two days later and then he began crying and we did it in a very loving, emotional way. Now we’re the best of friends after this put some distance between us. During the process I kept saying, ‘Is this what it is? Is this what it is? Do I like it? Do I like it?’ And the answers were, ‘Yes! Yes! Yes! Yes!’ It did confirm my sexual identity because I enjoyed it so much” (pp. 88, 89).