If I was to tell you that in the 19th century, there are dozens of cases where women took male pseudonyms, and posed as men in order to join the Army or Navy during the Civil War, and a handful of them continued to keep their male identity, as with that identity they could vote and enjoy the legal privileges only males enjoyed at the time, would you assume said women were lesbians, and/or had homosexual tendencies?
EDIT:And why or why not?
(I say this because I mentioned several facts and reasons at the museum I work at, and one of the ladies I was talking to (all in their 50-60s), replied "Oh! So they were the first lesbians!" (Now I know they weren't the first, but..) and my mother had the same sort of thought process when I told her what happened.)