So, you are an extrovert around your spouse, and she is an introvert....sound about right ?
I am much like you, I can be either one depending on the situation.
In social situations, IF it is people who I know, and am comfortable with, I can ebb and flow with the group. I find myself wavering between the two, but mostly, I interact as an extrovert.
In social situations where I am in a large group, or even a smaller group with people that I don't know, then I am all the way an introvert.
In both situations, there comes a time when I need, not want, to have some alone time in order to recharge myself....
However, I verbally communicate like an introvert, although I expect answers like an extrovert...
My partner is an introvert, although she is the same as me. She verbalizes as an introvert, and expects answers like an extrovert.