"Staying married" is not the same thing as "not getting divorced", legally, religoiusly, socially, or emotionally.
Shut that hole in the middle of your face; the draft is giving me a stiff neck. And if it gives me a pain in the neck, imagine what it does to someone who has to listen to you.
Before you start your mouth running, engage your brain.
You don't need to wear your heart on your sleeve, let alone on a cord around your neck. Your psych professor was full of shit (he's also about to be busted for boffing underage co-eds in exchange for giving them "A"s).
Your mate cannot make you deliriously happy on a 24x7 basis. No one can. Deal with it.