He's in a relationship w someone else but doesn't want me to be w anybody?

So I dmed my crush (knew he was single) and while talking to told me he leaves with his gal (apparently they got back together) I congratulated him and asked if he has someone nice to set me up with and he answered "calm down (my name)" so I asked him: why should I? You can be in a relationship and I dont? And he hasn't replied. Why does he act like that?

He likes you and doesn't want u to be with anybody but him
He understood u were checking his reaction
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He's in a relationship w someone else but doesn't want me to be w anybody?
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