a relationship can be defined as an argument;conversation, disagreement,talk, communication
differences in opinions mean you have to listen to the other party and accept their opinion or learn to live with it by being open minded and reaching a compromise regarding the topic of the argument.
I have just had an argument with my boyfriend about what the phrase 'no comment means'.
He does not want to comment on a subject that is important to me. I hate having an argument over something like that..i'm going to call him and make up