This is not particularly egoistic. People change overtime and relationships are formed or broken everyday according to people respective evolution. In PARTICUL

This is not particularly egoistic. People change overtime and relationships are formed or broken everyday according to people respective evolution. In PARTICULAR, wanting or not children is probably the n°1 important criteria to be in a relationship or not. Im not telling him to leave his wife but its an option that is very likely to appear, and also that "staying because of past decision to your wife" might bring more pain to him on the long run than leaving her to have a child. Its a purely rational decision (which of course is not to be rushed either). People (like you?) seem to believe in the "soulmates for life" dream but practical experienxe has shown me its not for everybody and many people end up miserable by saying in the same relationship out of principles or fear while they had so many good other options at some point.. Choose wisely.