Should I break up with him?

The perfect man doesn't exist. You may find someone else, but it sounds like you've got a good thing going. You mentioned you're a little cynical - maybe you have trouble resting with contentment. Don't do anything you'll regret. Maybe stay apart one weekend, see how you feel. How positiveley and highly you speak of him its obvious you have a great deal of care in your heart for him. Try taking a break - I'm not saying break up for two weeks. I'm saying don't talk for a week, see how you feel. Ask yourself if you want change and are you tired of being content? Ask yourself is this what you really want or are you PMSing or stressed? Take your time, no need to rush. Best of luck, I send my love.