I am not a single child, my friend is. And she was a lovely human being until I visited her parents. She was all cute and excited about it as if i was going to meet my second family, we were close and stuff. I went there, had nice food. Her parents were very nice to me. But she turned gloomier towards the end of the day. I was pretty sure I did something stupid; after 2 days I called her mother to ask about her. Her 15 year old daughter was jealous of her visiting friend!!! :P I sorted out the matter later but she never seemed so PSYCHO to me till that day.