How to not care that my girlfriend finds another mans confidence sexy?

Ok I went on my girlfriends Twitter and I saw A message telling her friend that Floyd mayther sexy **** talking *** was worth staying up for I realize that she will admire other guys looks but it bothers me that she says she doesn't even think he is cute but it's more hoe he carries himself that makes her think he sexy it hurts because it seems as if she is so attracted to his personallity rather than his looks. I can understand being attracted to looks but when she is attracted because of who he is rather then looks it makes me feel down I'm not insecure with myself it jus hurts knowing she thinks of other people this way I don't wants end my relationship cause I'm too jealous