Should i reply to my ex or carry on no contact?

I had to break it off with him 5 days ago because he told me he wanted space. Would come back tell me he missed me and go on as normal. But if i asked about us he'd say he wasn't ready for a relationship, the demand of it. I waited for nearly a month for him to be sure about me. So I ended things and he didn't even TRY to change my mind.
So I deleted and blocked him off everything except iPhone and I get a message that night asking why i deleted him and i said i don't want things to drag on and he just said can't we be civil? I said that we could be but i dunno if ready to be to which he said alright. I haven't spoken to him since then…
Today I get a message from him saying "Are you alright? I'm worried about you. At least text me so I know you're alright"

Now, I'm not a danger to myself. I'm fine. We have mutual friends that I've seen around, as we go to the same uni. I haven't even cried about this situation. I admit I want him back, but I'm getting confused. One minute he wants space, the next minute he's worried…

Can someone maybe tell me why he's doing this? Also should I reply?

He doesn't know what he wants. Also he feels like he has to prove that you are worth it.

If he wanted you back, he'd just say so. I think he doesn't want to look like the bad guy in front of your friends. He expects you to get over it and go on like nothing happened. It's not fair to you, and you don't owe him your friendship. I'd keep ignoring him and move on.

Yes and no its up to you and how much YOU love him

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