They are significantly different, 😉 at least i my opinion. Girls use rather round, large, shapely glasses, and sometimes smaller but will have some style aspect into it, and a million choices for frame colours. We never find it enough still. Men usually prefer simpler shapes, things that actually scream male! Perhaps you are using something feminine, just go to a shop, and see what makes you look more masculine. Trust me, just pick the most boring one 😛 lol.
-Anita