For a long time, there was the impression that Simon & Garfunkel were gay, or at least bisexual. This was especially prevalent within the gay.
Simon and Garfunkel were rumored to be gay primarily because that was in an era when very few singing duos weren't romantically involved, unless they were.
Four decades after their parting, Art Garfunkel speaks honestly of his feelings towards his former musical partner ahead of a solo tour. Guardian.