Why would a guy give you more attention when you say you don’t want to see him anymore?

Since we went on a date he’ll be on and offline and won’t read my messages, sometimes for 12+ hours, and it got to the point where he was sending one text a day. Also, the conversation was kept at surface level and seemed blunt and dry.

I suggested we talk, which he didn’t seem to bothered about and just said he’s super busy atm.

My interest has slowly decreased to the point where I don’t want to, and now I’ve told him that we shouldn’t move forward he’s going mad, acting shocked and concerned asking for the talk that he was too busy for before.

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He’s now saying how he’s being seeing his mum because she’s ill, that’s why he hasn’t been responding, but he’s been active on dating apps and social media.
Why would a guy give you more attention when you say you don’t want to see him anymore?
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