Stay Together or Break Up? How To Decide Now

I'm friends with a married couple who talk to each other almost exclusively in "Dr. Phil" lingo: continually acknowledging each other's feelings and voicing all frustrations in careful "I" statements devoid of anger or blame. Going out to dinner with them exhausts me, and I see in them what longterm involvement with James might have been an eternity of never quite getting what I want. In the wake of my six-month non-relationship with James, I've adopted a 100-50 test: If I'm not 100% content in a relationship 50% of the time, it's probably time to get out. Every relationship takes work, but that work shouldn't be unrelenting. It's as simple as that.