MedKev13 was right on the spot.
I also thought that you're not traped in a relationship, but traped within yourself.

"You need to find out what it is your aggressive side wants, and then find a healthy compromise."

Before telling about the dream you said 2 things not from dreamscape...
"I knew I would stray and be unfaithful "
" I was ready to leave him 10 years ago were just so unhappy"
I believe these also come from your "aggresive side", or "master self". What is it that you want but isn't able to reach? Is it a feeling, a state of mind, or to leave the big city and live in the country, perhaps another college or to live a fantasy, or just plainly put some things in its propper place, to fight crime in a batman costume, etc, etc, etc.
Something is missing that is causing this, I don't want to be cliché and say it may be something sexual but the theme starts at the "faithfullness" and goes all over the dream. But then your daughter enters the dream and it makes me think it is not sexual at all.
Maybe with one more piece of the puzzle...