The main difference is the timing, and who it was.
All that Gregory shyt was before they tried to make their marriage "real". I'm sure they've had feelings for each other for years but they kept it professional since this is technically just a job.
And I think Elizabeth is pragmatic enough to accept him fukking random women for "the job", like that secretary.
The difference now, is Phillip spent the last 3-4 eps talking about "I love you, we should be together for real" then he goes out and cheats with his ex-broad the very first chance he gets. Then lies about it.
And yeah Claudia is a moron. She didn't have to blow up the spot like that....the fukk good is that gonna do?
"are you sure he didn't cheat on you?"
Fred.