Hi ILoveTTATT, Does your friend know how to contact your parents? If not, don't worry be happy, because he is 15 years old. Teenagers are more likely to rebel against the WTBTS than other age groups. Also, he probaly hasn't had enough time to be fully indoctrinated.
Does he understand English? Have you sent him links to either Spanish or English websites such as www.jwfacts.com, www.jwstruggles.com, and/or www.freedomofmind.com?
Good job on reverse witnessing, but please be more careful or go more slowly. You could have given him more information about the Mormons to show that they are a dangerous cult by refering him to links on www.freedomofmind.com, if he understands english, or translate the information for him. Once he understands about BITE control, he should be able to critically think for himself about the WTBTS.
Peace be with you and everyone, who you love,
Robert