What does it mean when my crush smiles and waves at me after knowing I like him?

Anonymous
So basically my friend told my crush’s friend I liked him and they all knew (including my crush) except me until one of my other friends told me about it. However during the time that I didn’t know, he would smile and wave at me and somehow feel more confident? by the way he is the shy type. E. g. my friend called him over to talk and his friends came along with him too, the first thing he did was look at me, his friends were smirking and randomly say his name, after their convo, he didn’t say bye to my friend but smiled and waved at me to say bye.
What does it mean when my crush smiles and waves at me after knowing I like him?
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