It really depends on what your primary goal is here.
While focusing on long-term growth and change is crucial, what actually happened is still deeply relevant.
Sharing those details helps the community provide much more tailored advice, and it gives everyone a clearer window into both your headspace and your husband’s.
To put it in perspective:
A drunken, single-occurrence one-night stand carries a very different dynamic, betrayal trauma, and path forward than a long-term, calculated romantic affair.
Similarly, a purely physical affair impacts a relationship's foundation quite differently than an emotional affair built on shared intimacy and deceit.
When people ask for context, it’s usually because the "why" and "how" are inseparable from the self-discovery process you're talking about. You can't fully map out real accountability or behavioral change without looking directly at the specifics of what needs changing.
On a side note: your husband's response to all of this is genuinely interesting. Hearing how and why he arrived at his current perspective so quickly could offer incredible insight to other members here—both betrayed and wayward partners alike. Ultimately, though, it’s not your job to unpack his process for the forum unless you choose to.
If you're comfortable sharing a bit more of the backdrop, it will help us give you far more specific, actionable feedback rather than generic advice but it's entirely up to you.