Just remember that he is still the same T. You do not know him as a man and don't really need to.
I know that for ppl with SA history it is hard to accept a sexual part of every human being.
Sex IS normal, when adults do it and nobody is forced. Could be even fun.
So he likes porn (most men do- probably your H too- please don't freak out). It does not mean that he "likes" (not sure how to put it better) it when you describe your past.
I would freak out finding a site with child pornography or something similar.

However I agree with others that you need to discuss it with your T. If its bothering you you should tell him. Surely you've already discussed far more troubling matters