10. Constantly expressing your feelings is unnecessary
Assuming your partner knows how you feel about him is not enough. Show and tell him. Knowing you care about him or you are mad at him does not mean he will automatically know, with no actions of caring from your side.
Next time you read that romantic novel with that superhot guy in it, focus more on how much the characters have to go through to save their love and all the sacrifices they make for their relationship to work. See if you can recognise the above 10 relationship myths.