Thank you for your post. I am not familiar with this disorder and think that I might have the opposite disorder, whatever that would be.
I absolutely think that you should talk to this T about it. Many, many people talk about sex with their T's and I don't think that they need to be a sex therapist in order to help. I talk about sex and sexual issues all of the time and while it can be soooo embarrassing, my T has been a champ! I always feel better after I talk with her!
I asked her what she'd do if we had completely different beliefs or values and she said that T's are used to talking about these sorts of things but if what I wanted to talk about was so far away from her belief or value system that she'd let me know that she didn't think that she could help and help me find someone who could. So, it's definitely worth it to try to explore this with your T, cuz they can always let you know if they can't help.
GOOD LUCK!