Building Successful Long Term Relationships
avc.com
avc.com
It's not terribly difficult to imagine how strong the bond between you and someone else is. Each relationship has a different strength to it, and they sometimes grow and weaken. Some can take a lot of strain and others can't take any.
Here's a hint: how often do you look deeply into your partner's eyes? Yes, the way you did when you were dating. In most long-term relationships, it normally stops happening. It's one of the defining characteristics of a relationship that has a lack of commitment to growing in intimacy. Figure out how to grow in intimacy and you don't have to worry about simply tolerating another human.
I follow a more esoteric spiritual path, but there is a mainstream book that is well-regarded, "Passionate Marriage", that touches on some of the techniques folks have used to build successful enduring relationships.