Being called a sweet girl?

Gave a BJ to this guy I've been seeing.
He texted this morning saying he had a wonderful night (Haha no duh) he added that I was a "really sweet girl".

To me this seems like a bitter compliment.
What does being called sweet after a night like that mean?
Or what does being called a sweet girl mean at all?
I find it infantilizes me and I don't think it's a good thing to be called sweet.
Being called a sweet girl?
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