Ooh la la, Lúthien...

[mark12_30]

More from Alfwine's preamble, HoME, Morgoth's Ring:

The Eldar grew in bodily form slower than men, but in mind more swiftly. They learned to speak before they were one year old; and in the same time they learned to walk and to dance, for their wills came soon to the mastery of their bodies....

The Eldar wedded only once in life, and for love or at least by free will upon either part. Even when in after days, as the histories reveal, many of the Eldar in Middle-Earth became corrupted, and their hearts darkened by the shadow that lies upon Arda, seldom is any tale told of deeds of lust among them.