Why would my friends with benefits ask if he can take me out for dinner?

He told me his friend suggested that he should take me out and treat me to remind me that we are friends first and it’s not just about sex to him. However he has also told me flat out in person that he has feelings for me so I think he could be lying about his friend suggesting that and just didn’t know how to bring it up himself?
Why would my friends with benefits ask if he can take me out for dinner?
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