Eöl

[Lalwendë]

I think that if Aredhel was determined enough to defy Turgon and demand that she be allowed to leave, then she would be quite capable of denying Eol, if she had wanted to. She may well have been flighty as Eol likens her to a caged bird and I get the impression that she did not truly 'know herself'. In the terms of the story she may not have been right for Eol, but he must have seen some kind of spirit within her that attracted him - I think where it went wrong was when Eol started to leave her alone and her mind turned to thoughts of her former life. But to see somebody and quickly end up together with them is not unusual, certainly not in terms of Tolkien, and not in terms of the real world.

[Eomer of the Rohirrim]

Certainly not unusual, but often not wise.