Do not let your relationship turn into one person only being dominant/submissive-share each role, it will turn into an unhealthy relationship otherwise. Use "I see it differently" in difficult relationships.
Don't let others input about THEIR FAILED relationships effects they way you choose to work on yours. Some people are actually meant to be. It just takes a lot of falling down to realize who you want to wipe the dirt off once you pick yourself back up.