I totally agree with this analysis. There are also so many factors that we don’t know about. The age difference alone could be awkward, he is drinking age, she is not. He might go for a night cap before bed, and be double so inclined being in a strange environment. But she might not be able to legally drink, yet he can, and maybe her parents are teetotalers… who knows?

Or maybe he usually sleeps with a CPAP, and didn’t want to bring it up early in the relationship.

Or it could not even be about night at all. Maybe he responds poorly to mornings. Or often has a flare up of IBS or something in mornings.

There could be all sorts of issues people may have… And I am mostly highlighting outliers not more common things like social anxiety.