Messaging my sister’s crush?

So,
My sister is completely in love with this guy from her school. So much so, it is making her depressed that she’s not dating him, and her mood is terrible all the time... dumb to let a crush affect you like that I know, but that’s what’s happening.

She won’t ever tell him, and they’re not even really friends but have had a few friendly conversations. I have come up with an idea, that I should dm him and let him know...

Good or bad idea?

Also this is the message I would send to him if you can be bothered reading it... I really want to see what others think about this because it’s risky and could backfire real bad 😆
Messaging my sister’s crush?
Messaging my sister’s crush?
Messaging my sister’s crush?
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