Is it a bad idea to block your crush on social media so you won't feel self-conscious about everything you post?

My friend has social anxiety and having her crush as a friend on social media makes her feel even more self conscious about posting. Our other friend said she should just block him, but she's afraid he might find out because they have so many mutual friends.
Is it a bad idea to block your crush on social media so you won't feel self-conscious about everything you post?
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