From what you have shared it's possible that you lack the ability to provide "companionship" in a relationship. Unfortunately, this is often what many lack that ends up with their relationship falling apart. When a person is not experiencing companionship in their relationship they often begin to look elsewhere for it. Often when the other individual is not initimate sexually, it's due to the lack of companionship in the relationship. From what you have shared, your wife has already strayed from you and cheated on you. It is highly probable that your relationship will not last and she will end up straying in her desire to experience companionship again.