Well played. Whether you want to admit it or not, giving in would have messed with your head.
You are probably right. It wasn’t affecting me the way it was in the beginning (me having expectations again, feeling sorry for myself etc). but ultimately sex after BD probably is not wise considering it reinforces the facade of the love we once had. I had to experience it to see that.
We all have our blind spots, and sometimes we are aware of the feelings that we actively feel and can manage them. But sometimes things slip through and we are unaware of the collateral consequences of certain behaviors....and those also matter. A lot.