Andrzej Sapkowski's portrayal of love among elves in The Witcher is unusual. Unlike Tolkien, whose elven couples are together forever, Sapkowski describes how due to their eternal life, eventually elven couples become weary of each other, even to the point where elven women lose the ability to bear children. To reignite passionate feelings, elves form alliances with humans...
I prefer the idea that elves do form lifelong unions and never lose their passion for each other. Isn't it beautiful to have the opportunity to enjoy your soulmate for eternity once you've found them? The only challenge is finding true love.