We've been together so long but analyze: is time a reason to stay? Map relationship: years together vs. current happiness vs. future potential. Calculate: time invested vs. whether relationship is actually good. Show me the sunk cost trap: staying because of time already invested. Give me the truth: time together doesn't justify staying in bad relationship. Include: whether I'm staying because of time invested, if past justifies unhappy future, and what I'm avoiding by staying.