Should I Give Him The Letter

I made a post yesterday about how I catfished my ex... I got a lot of hate and honestly I completely deserved it. I was mad he cheated on me so I pretended to be someone else to get all his personal information. Him telling me he was bi. Talking about physical, emotional, and sexual abuse. Opening up to me about a lot and I posted it all over Facebook.... He tried to take his life and is now in a mental hospital.... After the hate I received on the post I decided to write him a letter since I know what mental hospital he is at. Should I send it or will it just make his mental health worse. The letter says what I did why I did it and that I'm sorry

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