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.

[Kha0tiic_xo]

Honestly she's your family, so if I were you I would immediately set firm boundaries with her and say, listen I've seen how you act around my boyfriend and that shits not going to fly, please act properly around him, because he was extremely uncomfortable around you last time!

[Asker]

I told her that, and she said "hold on to him he's a good guy. He resisted all my flirting because he only likes you. Don't know if I can find someone who'll do that for me". I said don't worry you will. Just don't do that around him again, and she said she'll leave him alone for my sake.

[Anonymous]

Dont talk to her she knows what she is doing. Talk to him. Maybe kiss him infront of her to show its your territory