Miyagawa Isshō's "Spring Pastimes" screen from c. 1750 shows a lot of men-on-men flirting and love-making.
The life-long lover of Louis XIV's brother, the openly homosexual Monsieur, the Chevalier de Lorraine had a powerful hold over his lover.
Arrested for sodomy in Germany, composer Johann Rosenmüller escaped and ended up in Venice, where his music in the Italian style made its way back to Germany and greatly influenced other composers.
The only surviving complete frescoes from ancient Greece show a drinking party scene of male lovers, c. 470 B.C. Hot stuff.
The giant of baroque religious music, J.S. Bach's musical justification of his style of composing is the cantata Der Streit zwischen Phoebus und Pan. It includes as its centerpiece the homoerotic aria "Mit Verlangen."
Bill Tilden turned tennis from a sissy sport into a game for athletes. Ironically, he was later ostracized for being a sissy himself, though he has always been considered one of the greats of tennis.
Mori Ranmaru was the page and favorite of powerful 16th century warlord Oda Nobunaga. They were also lovers, committing suicide together during a siege at a temple in Kyoto.