Boyfriend knows I would say yes if he proposed, is that good?

We’ve dated for almost two years and I was just talking about the future and I said something like ‘I’d say yes you know’ and he replied ‘I know you would’.
is that a good thing that he thinks I’d say yes, like he knows I wouldn’t reject or turn him down, or was it a bit of a arrogant thing to say?
Boyfriend knows I would say yes if he proposed, is that good?
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