Girls, What to do if my cousin is flirting with my boyfriend?

Anonymous

I'm 19, my boyfriend is 21. My boyfriend is an attractive guy, and while we were at a family gathering, I noticed she walked by him and swayed her hips, passing very close to him. She came to chat with us, and even though there was a chair next to me, she sat next to him instead. Another time, she was in his view and she raised the hemline of her dress to show more of her legs. He She also bent over in front of him. He looked uncomfortable and sought out the other men in my family and went over to talk to them. She has always been chatty, flirtatious, and attention seeking, probably because her father walked out when she was little. She is 17 and she has dated a string of guys already. How to talk to her about this? My boyfriend treats me well and cares for me and protects me and I know she would like someone like that too and is just going about it the wrong way.

Girls, What to do if my cousin is flirting with my boyfriend?
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