Why are Leo women so slick (sneaky)?

I love Leo women for their confidence and dominance, but they always but on this front like they are so innocent and quiet then next thing you know they have bitten your head off or something. They are so slick that you wouldn't even know what hit you. Their sex appeal is what get you and they can make you so head over hills for them that when they threaten to leave you, you straightening up in a heartbeat. Lol. How the h*ll do these Leo people talk about themselves so much but they know everything about you because while you were listening to them boost about themselves they were analyzing you the whole time. How do they do this?