Westerns are usually filled with slashiness. Just watch Butch Cassidy and the Sundance Kid. It's obvious. :D

Oh, my God, re-reading... Old Shatterhand is the biggest Marie-Suzette ever. He knows everything, is strong, pretty, and everyone loves him except the veeeery baaad guys, but these dudes don't live long. :D
But their friendship is so... beautiful.