How do I write a hard hitting tbh for my crush?

So schools out for summer break I have a huge crush on this guy and we have this flirty thing going on and we both have said that each other was cute. And on snapchat when I post slide up for a tbh (to be honest) he always slides up I need a hard hitting tbh to make for him but I don't want to flat out so I like him and I don't want to say your cute since I have already said that please help me?
How do I write a hard hitting tbh for my crush?
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