I ALWAYS feel like that after an orgasm. After that I think "nah, no sub thing for 20 minutes now, please."
Have you ever talked about chastity/cum control? Just try it, I become even sluttierer when horny for more than one hour, hehe.
If he doesnt want that it might be time to move on to new borders for both of you. At first that seems to be sad, but you have to realize that human beings are always changing, no one will be the same after 2 years of live. Many just TRY that, with already shows the change.

English in the morning is hard stuff, sorry. Hope I formulated understandably.
*hugs*