I'm going to sleep with my friend's high school crush
How are you going to attempt to sleep with them?
I will try to seduce his crush.
You are just a very sinister person who can't let other people find happiness. You have no reason other than drama and vitriol to try and woo your friend's crush away from them. It is disgusting and will betray them heavily.
It's just a plan I came up with.
It's a terrible plan that will hurt your friend. Why would you want to do that?