My crush finds me attractive, so what's next?

So I really like this guy in my school, I made it obvious to him twice but nothing has happened. I don't see him much on campus that's why it's making harder to actually interact with him in person. We'll today I post a picture on Instagram and he puts hearts under the picture. If he finds me attractive than why isn't he making a move?
My crush finds me attractive, so what's next?
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