My ex fuck buddies friend messaged me tonight, why?

Anonymous
So my ex fuck buddies friend messaged me tonight saying "you can do me if you want". Very childish I know, unsure whether it was my ex or his actual friend. I haven't replied and he's now unsent the message. Any ideas why he'd try playing games like this if it is my ex? He knows I still like him, it was him that ended things. I'm gonna confront him next time we speak and ask if it was him.
My ex fuck buddies friend messaged me tonight, why?
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