What does it mean when you been hooking up with this one man for a while then asks you if you have a new man?

So me and this guy have been casually hooking for a while now and recently I posted on my Instagram story talking about this one other guy I have feelings for and when he saw my story he messaged me and ask me “if I had a new man?” I said no I’m still single. Then he said “I thought you were not single anymore.” Then I said “no you don’t have to worry about me having a man any time soon I’m taking my time on this. The last thing I want is to deal with again is a liar, an immature man who clearly still has a lot of growing up to do so I’m taking my time. I’ll be single for a good minute I guess.” Then he ask me “your talking to somebody.” I said “the communication is on and off cause he is always busy with his daughter and with work so we really don’t have time to talk or even hangout so it’s more of an on and off type of friendship.” This isn’t the first time that this man seems like he is being jealous or possessive, there has been times where he has given me attitude when I don’t go and see him or when he doesn’t get to be around me expects me to hangout with him every time he texts me.
What does it mean when you been hooking up with this one man for a while then asks you if you have a new man?
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