As man, your woman should know that you're capable of picking up other women (not that you should act upon it) because that creates healthy competition. It's good that the female MC sensed dread thinking he was cheating but the male MC is too comforting too, which is no good either. That's why she said "Him cheating? He's not capable enough".
As Patrice O'Neill said it: Men are fishers and women are fish, you should know as a fisherman how to catch and release so the fish understand your scope to catch is unbound.
A really good chapter, overall. I liked it.