I actually wasn't saying that friendship is all there is too it. I was suggesting they are probably close friends who sleep together regularly. I was just trying not to say that explicitly because I don't know who is reading this. But basically- that's what I meant by "together in every possible way." You need intimacy for friendship. You need lust for sex. For a long term relationship, you need commitment. If it's possible for human beings to have intimacy and lust without the commitment, it's possible for elves as well. I think you can have any combination of the three.