It's only as good and fruitful and perfect as you want it to be. Conversely, a relationship is only as bad, miserable, and destructive as you allow it. So forget what you've read in your romance novels, seen on the Partridge Family or you favorite soap operas. Forget about Barbie and Ken and Cinderella and her Prince Charming. Stop buying into the lie perpetuated for centuries by the media.
Today there are so many denominators in a typical relationship.
Successful couples realize that few situations are perfect. For example, he or she has children from a previous relationship. He is of one faith and she is another, so despite the fact you love each other and are ready to make that long-term commitment, the couple simply can't go on. The only necessary ingredient to making your relationship work is your desire and commitment to making it work. The moment you stop caring and become apathetic, it is over.