Tag "too much of a good thing"
We all know the state of mind this scene represents. The mind starts to comment on what is basically a good thing. The seemingly innocent question Is it all good? opens the door for doubts and fears. All is well but suddenly it seems something is lacking. Your not as inspired anymore, not as thrilled as you used to be with this formerly new and exciting lover or job.
It seems that fear of the positive is at work here.