Is he playing game or really mean he think as his sister about me?

He is a player and at first i mentioned that I won’t have sex with him but he is still around and I don’t send him any text message or posts but he send frequently texts to me and sometimes a little bit of flirting but now he sent a post to me that was about mention some one who is not your blood sister but she is your sister

what does he mean? Is he playing game? If not why he is still around and text me he can cut the relationship

Is he playing game or really mean he think as his sister about me?
Post Opinion