Stabbing is typically a substitution for sex.

捅伤是典型的象征性爱的动作
Well, let's not rule out jealousy.

先不要排除掉嫉妒
There's an unfortunate number of people

有很不幸的一群人
Who attach their self-worth

都把自我价值
to the amount of "friends" following them online.

与网上有多少粉丝联系在一起
I don't think the blow to the mirror was coincidental.

我觉得撞镜子并非偶然
I think she was looking at herself when she was attacked.

我觉得她被袭击时正在照镜子
He's commenting on her vanity, which explains the selfie.

他对她的虚荣有看法这也可以解释那自拍照
He's making a statement.

他是在声明一种立场
He wants people to look at him instead of themselves.

他想让人们注意他而非自己
He feels ignored.

他觉得被忽视了
Well, he's got our attention now, so let's make him regret it.

他得到我们的注意了我们去让他后悔吧