If he never wanted me (like he said in our last argument)

Why did he look at me like that on the first date? Like "where have you been all these time?" Like I was the one Why did he kiss me so passionately? Why did we connect so much in sex? Why did he confirm that I was the one? Why did he even hint that we were soulmates? Why did he tell me he's scared of losing me? Why did he talk to me on daily basis and showed up when I needed him? Why was he sad when I got sad? Why bother crying at all?

And now he just neglected my love confession for him, after everything ended. I don't understand. Was I delusional for thinking maybe he did love me for a bit? Or was he lying to me all these time? Even though he claimed that he never lied. But how can I trust a person that even lies to themselves?