It's the good sex she is missing in her marriage even her husband indicates it during the conversation.
Hutch knows exactly what his boss is capable of, he witnessed it from dusk till dawn and later at the firm.
It looks like he knows what his wife needs at the moment and he gives her the freedom.
He wants her to stay with him.
This is Vivian's current mindset, her face speaks volumes.
She thinks with her vagina right now.
The marriage must have been boring the last few years especially since the son left for college.