strip youself naked infront of him, ask him help you to cum with
his finger, if he can make you come with his finger and he won't
"stand" I think you don't need to leave him.
But if he will stand and wants to do it with you , stop him and
leave him he is playing reverse physco with you. He just want you
to give to him and not begging from you.
If he can stand and still don't want to do with you , he must have
HIV infections.