Is it obvious I have a crush on him?

I've invited him out several times. Even once told him to bring his girlfriend, he told me he doesn't have one (I already knew this). So I told him "even more reason to come". I've told him, teasingly "It's a good thing you're cute!"

Is it obvious I have a little crush or do I need to write it down for him?

Is it obvious I have a crush on him?
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