Addiction refers to a difficulty in controlling certain repetitive behaviours to the extent that they have harmful consequences. They are the result of powerful compulsions to use and do certain things excessively, often out of a need to escape from upsetting emotions/situations. These compulsions can trigger a self-perpetuating process, which can cause pain and suffering not only for those addicted, but also for their friends and family.
An affair or betrayal is a relational issue and there may be many reasons as to why they occur. Often they are the symptom of longer-term problems. For example, the person who committed the betrayal may have made previous attempts to resolve underlying issues that have snowballed over time.
Although many people choose to end their relationship following the discovery of an affair or a betrayal, a great number will want to work things through. A betrayal may deeply shake the foundations of a relationship, but it can paradoxically make it stronger – especially if there is an attempt to rebuild trust and communication, and deal with the relationship problems that may have led to the betrayal.