Question: what to do when someone else likes your crush?
Answer: You can't control your crush's feelings. ... 
The other girl did nothing wrong. ... 
It's not that girl's fault that you feel hurt. ... 
So, here's what you can do to process your feelings instead of projecting them onto the person your crush likes:
Don't take it as a personal insult. ... 
Write about it. ... 
Focus on you + the things you love.