Why would a man keep you around if he dosent want a relationship?

I’ve been seeing this man for 9 months and we have spoken everyday non stop. He said he dosent want a relationship but when I try to leave he says he dosent want me to and that he wants to still see Me? Or when I get the strength to leave he just sells me these dreams and promises me dates and things. We have been having sex for 9 months now and it is good sex I think Maybe that’s a reason I can’t let go and because I’ve never spoken to someone for so long? But why does he keep me there if he dosent want a relationship. I try to leave but then he will just message me randomly saying what are you doing or checks up on me and says he wants me but nothing ever changes?
Why would a man keep you around if he dosent want a relationship?
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