Sounds like you read the wrong book. Have you found "After the Affair" yet? I really think it is a good book, and it doesn't make those blanket statements like "they stay in love forever". That is BS; all people do not react the same way. Anyone who says they do is not basing it on real studies, just his own perceptions. You work with children. Do they all react alike to the stimuli around them?
It's good that he is inviting you to more events. Things sound like they continue to improve.