#6. NASTY FIGHTS ARE GONNA HAPPEN
Forever is a long goddamn time, so fight are going to happen. Nasty ones. Compromise and communication is critical to avoiding fights, and most marriage counselors advise learning how each other argues and expresses anger. Are you a yeller? Does she need space to cool down after you guys go at it? These things are more important than trying to avoid conflict altogether.
On the flip side, stop being such a tightwad. Those bottles of lotion crowding the sink aren’t going to disappear once you guys are married. Deal with them.