There can't be. But if there was it would be where you were never mad at one another. You never made mistakes. You ALWAYS were complimenting each other with out being critical EVER. which is all impossible
A relationship when the person your going to marry doesn't cheat on you after 4 year engagement , and tells you in the face that you were not as good as they wanted , and now you spend nights crying all night realizing they were right , you are nothing "so don't fall in love there's just too much lose , if your given the choice then I'm begging you choose to walk away , walk away . don't let it get you it , I can't bare to let the same happen to you" ~ Terrible Things by Mayday Parade
There is No Such Thing!! Every relationship is a give & take. You are there for each other, good or bad. They all have their ups & downs and if you can't support each other with love, trust, honesty & understanding then you don't stand a chance.
A perfect relationship is when you both support and respect the thoughts and ideas each other has, and compromise to your mutual benefit. A normal relationship is where you argue about them to get your way.