Does your SO know everything about you?
My husband knows everything. No skeletons or dust bunnies in my closet. For me it's an indicator of the health of our relationship. Something's going wrong if I lie. It puts a wedge between us.
I'm using a broad definition of lies. To me withholding information is just a form of lying.
Still, I'm tempted to lie in really stupid ways. When I go shopping and I perceive that I have bought more than he would approve of I want to hide it from him. When I was a kid my mom hid things like this from my dad. She used to have me get the mail and hide the bills - I even did this after I had moved out of their house. Even though I know this is the source of my needing to hide things from my husband I still struggle with it.
How about you? Does your SO know everything about you? Do you purposely withold info?