He's actually blushing!! Omigosh.🤣
He's actually the last one I would expect to see flustered But he should, look at that, he's got a reason to be ashamed.
However I like that he's actually very true to himself concerning his feelings: he didn't quite uessed what it is yet, but he notices the change without a fuss and goes on with it . Refreshing.
And evidently: He's so cute? cute cute cute cute cute!