Why do girls’ point out other girls’ and ask you if you would hook up with them?

It seems every girl I was in a relationship with always pointed out other girls’ and asked me if I would hook up with her or have sex with her? I am an honest guy so I will give her an honest
Answer whether it’s yes or no , I will usually say if I am single , hell yea I would go for that. Do you girls’ get off on these questions or does it make you jealous?
Why do girls’ point out other girls’ and ask you if you would hook up with them?
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