This will prevent Cassidy from sending you messages, friend request or from viewing your profile. They will not be notified. Comments on discussion boards from them will be hidden by default.
“I crushed on the most popular guy in school! I saw him at a concert and I shouted out," Is that Shane Lopes? You were the most popular guy in my class, but you never wanted to go out with me. Instead it was Amanda Wayne. What are you thinking now?”
―
Katy Perry