Turned him down... opinions on situation please!!

A guy I’ve been on a few dates with was over at my house tonight, I made cookies and he came over to have some. When he was leaving he went in for a kiss and I just wasn’t feeling it so I pulled back and told him “no, I don’t want that” (we’ve kissed and made out before, I just wasn’t feeling it tonight). He thought I was just teasing so he playfully kept trying and I kept pulling away and I let him kiss me on the cheek but still kept pulling away when he went for my lips until finally he got the hint that I wasn’t playing and asked “but why?” And I looked him in the eye and said “because I don’t want to.” He then got a discouraged look on his face, looked to the ground and left without a word. I closed my door and locked it behind him.

Idk why I wasn’t feeling it, but I just didn’t want to kiss him, but now I’m losing sleep over it wondering if I should have just kissed him? I think over the last couple dates with him I’ve started to see some of his true colors and really am just turned off by it, but was in denial about it until this incident tonight. Shouldn’t he have just respected that I didn’t want to kiss and not stormed off like that? Idk maybe I’m over thinking this and just needed to get it off my chest and hopefully I’ll be able to sleep now! Ugh!