How do I deal with my sister?

My sister and I are nothing alike, looks wise and personality. She’s 6 years older than me and she started dating young ( lots of bad experiences), I on the hand have never dated and I’m looking for the right person. I do get approached by guys a lot and I am attractive and I get a lot of compliments for my looks so it’s not that I can’t date but I haven’t found a person that I would like to date. She keeps making remarks about how she’s prettier as she’s a blonde and I’m a brunette and now I like a guy and she keeps trying to prove she can get him without actually saying, she tries to be in the same place as he is so he can see her and ask her out and tries to grab his attention just to show me she can, she doesn’t actually want him. She keeps telling me that she could have any guy she wants and indirectly pointing out that I’ve never dated anyone. She’s narcissistic and selfish and acts immaturely all the time, I love her but she keeps hurting my feelings and pointing out my flaws and insecurities.

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Whenever a guy that she doesn’t like approaches her, she tells him I don’t want you but you can have my sister if you want.
How do I deal with my sister?
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