Both sound very plausible.
Some key sentences:
Cathy: "I didn't know before going there."
Where did she go and what didn't she know? I feel she went to meet someone (from Swyper) only to find out, once she got there, it was Stephen. Yeah, I know, big stretch.
Jade: "I love you. And I'll support you, even though this is the worst thing that has happened in a very long time."
"The worst thing to happen in a very long time"? Worse than all the students her husband is sleeping with? Him sleeping with her best friend would be worse than that...
This one is definitely fucking intriguing...