[Verginius Rufus]

Maybe I'm just too skeptical, but I don't believe the stories of men and nymphs copulating...I think the stories were just made up later.

Well, maybe Achilles was the son of a mortal man and a nymph, but the other stories were made up.

[Nikas777]

Maybe I'm just too skeptical, but I don't believe the stories of men and nymphs copulating

Of course not - it is metaphor - what made those myths and legends is intriguing. Was it based on real events elaborated over time or were they made up to explain something not known?