Erin, 1) stop snooping - it only hurts you. 2) tell your parents if your are close to them, you may be surprised by their reactions. It made me see them in a whole different light, my Mom especially. My parents love my H like a son, I thought they would break down and cry. They didn't. My Mom is now my rock. Guess what, her marriage wasn't so great either. She supports anything that I say or do. She has shown me how strong she really is and in turn how strong I really am. Just be carefull how many details you give. I may have given a little too many. My M may be getting back on track but it will be hard for my parents to forgive and forget.
Take care of yourself. We are all routing for you!