Worried of boyfriend delayed texts. what does this mean?

I have been dating this guy for a couple weeks now. things were great in the beggining, we'd call and chat every day non-stop and hed say "luv u gn sweetie~" texts. the past few days I've been having anxiety because im just worried about him leaving. there's no reason for worrying, it just comes out of nowhere. he barely ever calls me, unless were in a group chat with another friend of ours, he barely texts, and whenever i go to bed he just texts "goodnight", no i love you, gn sweetie, or heart emoji. i talked to him about my anxiety about the relationship, and he told me "I just feel more burnt out than before, socially." he also told me that its normal to be worried and that he gets worried too. i asked him along with how he felt of the relationship and he said," honestly, im not so sure". i dont know what this means, but i dont want to tell him about how i feel with his delays in texts. he does still talk to me, not as much though and i flirt with him and he goes with it. does he still like me? i really love him.

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Yesturday, he was being a bit talkitive, and today he won't respond to my messages. its really confusing me.
Worried of boyfriend delayed texts. what does this mean?
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