What does it mean if you’ve been talking to a guy for a few weeks and he starts saying ‘Good night, sweet dreams’?

I know every guy is different and it could mean many things, or it could mean absolutely nothing, but generally, is this a good indicator that he could be interested as more than friends, or could it just be friendly? I personally wouldn’t say that to someone unless I had interest/intentions on it going further, even if it was a close friend- so I’d like to know a guys perspective on it. We’ve been talking for a few weeks now and he just started saying it in the last few days. Any opinions are appreciated :) thanks so much in advance!

What does it mean if you’ve been talking to a guy for a few weeks and he starts saying ‘Good night, sweet dreams’?
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