Response: The qur'an does mention it is a sin and yes, sex can be and should be, an expression of love. However, homosexuality is lust, so it's not possible.
But you yourself told us that the qu'ran doesn't mention it. Were you mistaken? How can the qu'ran mention it as sin, if it doesn't mention it at all?
Well, you say that it's lust, but since you've been caught lying twice in this thread alone, we won't take your word for it. Besides, how would you know?
My understanding is that your argument was that since lesbian sex is not reproductive, it must be sin. But since you agree that there is a third choice, love, it does not follow.
Your other argument is that it violates the qu'ran, but you yourself told us it's not mentioned in the qu'ran, so that can't be it.
I think you made another quite ridiculous argument that since you're heterosexual, everyone else must be also, but surely even you can see how absurd that is, so I don't bother with it.
So, on what basis do you argue that homosexual physical love must inherently be lust? Remember, when you answer, there are several here who have direct personal experience to the contrary. Speaking for myself, if I could never be physically intimate with V again I would still stay with her and love her, because for us the sex is about the love, not the other way around.