When your mother died.. you were lost , sad and alone. Suddenly a strange but kind person entered your life.. it was John, he was your refuge, the place where your feelings were open, in front of him your feelings were exposed, you were weak in front of him because of your feelings, and one day you were going to John's house.. you saw John in the garden of the house talking on the phone with someone, you heard him say in a voice that seemed weak

"I can't tell her.. now she trusts me, it will be shocking for her.. I don't want to lose her, she is everything to me now, I will die to tell her"

it turns out that John killed your mother..