This is a difficult question to answer, if you don't have physical evidence that a child is in danger then the police/authorities may not treat it as they would if you did have clear evidence. My final answer for this question is that it would be false. In this case you want to play it safe and report the incident just in case.
Well, this is to be because if you have a long term relationship, that right there says that you are happy with your partner. Furthermore, as you are in your late adulthood, you tend to get bored and not wanting to have anything to do with that. Hope you find this helpful!