From this great article by Life Site News:
It is clear that love between two people of the same sex can be profound and deep—this is established in literature and history. But, incongruously, these friendships are now taken as evidence of homosexuality.
In The Last Battle, Lewis says that mixing truth with a lie makes the lie much stronger. People point to the truth of friendship—and the very real love that’s found there—and say: ‘Here is proof of homosexuality!’
“To say that every Friendship is consciously and explicitly homosexual would be too obviously false;” Lewis states, explaining that ‘wiseacres’ then accuse deep friendship of being somehow subconsciously gay.
“The fact that no positive evidence of homosexuality can be discovered in the behaviour of two Friends,” Lewis continues, “does not disconcert the wiseacres at all: ‘That’, they say gravely, ‘is just what we should expect.’ The very lack of evidence is thus treated as evidence; the absence of smoke proves that the fire is very carefully hidden. Yes – if it exists at all. But we must first prove its existence.”
Looking for subconscious homosexuality in friendship, Lewis argues, is like looking for an invisible cat: “‘If there were an invisible cat in that chair, the chair would look empty; but the chair does look empty; therefore there is an invisible cat in it.’ A belief in invisible cats cannot perhaps be logically disproved,” he says, “but it tells us a good deal about those who hold it.”
If anybody takes a look at the fandom of “Sherlock”, or “Les Miserables” (Grantaire and Enjolras, of all people), or “The Lord of the Rings”, one can see the obvious truth in this statement.
This idea of erotic love secretly buried inside of friendship cheapens both erotic love and deep, true friendship – something just as valuable.
Sam and Frodo do not need to be lovers.
They are friends.