Daisygirl, my two sons, especially the younger one, seemed to stagnate at the age of 17…till they were about 27-28. They were so childish and irresponsible…especially the younger one…I thought they would never grow up.

But they did.

I just want to say that I think it’s normal for sons to grow up later than daughters. And if he’s been separated from his dad for 5 years, they do have a lot of catching up to do.

Maybe, as someone suggested you should take time out, and allow father and son to reconnect.

If everything else is good, then hold on to this guy. And it is a positive character trait if he is a good father.
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As soon as you trust yourself, you will know how to live.
Goethe