I'm not sure about sexual addictions, but in terms of wanting someone other than T to talk to, that me be because of how you view T? I'm not sure how that is, of course, but if you view him/her in a parent or other role-model role you might want someone more "on your level." Also, a lot of Ts try to avoid giving advice, etc. They don't react like an outside person would (which is often good but not in all situations). Maybe you just want someone's advice and maybe you actually WANT judgement in this case?
Finally, it's TOTALLY normal to want someone to relate to about a subject. There are some things people just can't understand without experiencing.