My hunch would be to just give him the details as a timeline:

5/10/2009- had sex with OW at the Sleeze-o-Rama hotel
5/12/2009- had dinner with OW at...

When you mention "fine details" I'd say just write down "sex" or "intercourse" or some other clinical definition and leave it at that.

Me (BH)
Married 2000, DS 8, DD 6, DD 2