There is a boy whom I love its been 4 years he was my senior at my school, should I propose him or not?

He didn't know me i started to text him few months ago, i wished him for his birthday but he seen it and didn't reply, what should I do, how can I keep him interested in me? I told him we can meet him, but the next day he didn't reply to me and that day was his birthday? He was online all the time replying everyone wishes at his story on insta.

There is a boy whom I love its been 4 years he was my senior at my school, should I propose him or not?
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