My cousin & I grew up together. We played & enjoyed life, we even went to the same school. One day he returned from work, spoke normally & locked his door and hung himself. He was going through a bad break up and couldn't share his feelings. This incident sent us all to shock & shattered us. We all saw him as a fun, cheerful guy. But deep down, he was depressed. That's how I lost my best friend. It taught me that a person can look 'Normal' and yet be going through a lot. However, personally, being in a good relationship for some years, I can spot red flags and few signs for how a partner can ideally be. So I would love to be a friend to someone going through battles like same.