Why girls who are merciful are hot?

I was really broken and a girl was really showed concern over me and I really started to fall for her.

And I noticed that if I am strong snd girl show me compassion its one things. But if I am weak and I find a girl who really lift me. I fall for her, I mean I know its a weird but there was a girl who hugged me when I try to harm myself and when she finished all I said is can you keep hugging me and I emotionally attached to her.
The beautiful thing that I know that this girl controls me completely emotionally becuse I am very unstable, and if she was evil she could send me to the other world already but she show mercy and let me live.

Why girls who are merciful are hot?
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