I had sex with my cousin and I want sex with her again?

I had sex with my cousin sister when I was in 5 th class and she was in 9th and we had sex for 1 year then we stop we had sex like playing together but now I am in 12 and 18+ and she is also 21 or 22 and now I want to have sex with her again but she said but she talks with me normally and we have fun like cousins but how can I convince her for sex again.
I had sex with my cousin and I want sex with her again?
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