John Gottman runs the "Love Lab" at the University of Washington in Seattle, where he analyzes the way couples communicate with each other and studies what their bodies are doing as they discuss issues in their relationship.
As a result of years of study, he can predict with 90 percent accuracy whether a couple will stay married or divorce. John Gottman: The signs of a lasting relationship are that people really work to build the friendship in the marriage.
This is not an indication of a security issue such as a virus or attack.
In the vast majority of cases, spouses who had Internet encounters with the opposite sex did not think they were doing anything wrong.
Yet research had shown that on-line adultery caused the same feelings of hurt, anger and betrayal as skin-to-skin contact.
He is the author of "Relationship Cure." CNN Moderator: What are the signs of a lasting relationship? Also, that they manage the amount of conflict between them.
The signs of a relationship that is heading for disaster is that people neglect their friendship and intimacy and allow conflict to escalate and become contemptuous and insulting.