Things are looking VERY promising for you. I imagine it felt nice to have your C validate you in that manner. I know when I voiced my thoughts to our MC about Whore/Madonna...her vadlidation really comforted me. Hearing that she thought there was actual substance behind the possibility of him having Whore/Madonna helped so much. It didn't ease my pain from his infidelity, but at least it validated for me that....it honestly wasn't ME.
Add to that the fact that your H isn't resisting this but rather...wanting to learn more, you are way ahead of the game. If he's interested and willing to learn more about this and to seek counseling to help change it....well, you are just so very lucky to have him.