You have way different styles of communication than your SO but this is not a communication issue. It's an issue of structure and organization. People who are unable to make a quick decision, state it, and then stick to it, have a greater need for structure. Saying "I don't care" means, "I don't know". And they really don't. Their desires wobble, back and forth. Stress makes it worse. If you create more structure in your home, leaving less to and impulse, there's less opportunity for "mis-communication". Put your daily schedule in writing, and post it. Everyday things, like where to have dinner and what it be, and who makes it, should not be something anybody can use as a catalyst for starting real trouble.