If he blushed, can I assume he likes me?

he's a reserved guy... still I got him a birthday gift... he refused to take but looked down, smiled and got pink... if he blushed, can i assume he likes me? or at least fancies me in any way? I mean, you get happy but you do not 'blush' until you have feelings for the other person...
If he blushed, can I assume he likes me?
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