How do I tell a girl who I’ve known for years that I’m slowly falling in love with her?

How do I tell a girl who I’ve known for years that I’m slowly falling in love with her but I know I can’t have her because she’s talking to other guys on dating apps?
How do I tell a girl who I’ve known for years that I’m slowly falling in love with her?
How do I tell a girl who I’ve known for years that I’m slowly falling in love with her?
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