Never.
From Create Your Own Story
Jade shakes her head, stands, and begins tapping away on her phone. You desperately try to stand, but you aren't fast enough. Jade gives one final tap, looks up at you, smirks, and says, "Congratulations, all of the school knows what face you make when you're getting plowed. Thankfully, I kept my face out of the video. So, enjoy that!". She turns to leave, but you manage to fling yourself at her in a desperate attempt to get her phone. Jade hisses and begins trying to get away from you, but you keep on her. Jade screams in fury and twist around, her elbow connecting with your face and smashing your nose up into your skull.
You are Jade West and you've just accidentally killed Tori Vega, right after you sent everyone in school a video of her getting plowed. It's obvious the cops are going to be all over this, and you're pretty sure Tori's sister is still upstairs. So, you only have a few hours. You check outside to make sure nobody's around, then drag Vega to your car. You hit the gas and speed away, Tori's body in the back. Thankfully, you have some time and a few advantages. Tori's family won't worry about her until later tonight, nobody at school will question Tori's absence due to the video, there's no blood anywhere, no weapon to be traced back to you, and you told Beck you went to a club (so you have an alibi).
There's also no reason you would want to murder Vega. No financial gain, no previous incidents that would indicate murder, and no wrongs that would cause you to kill. You're pretty safe, as long as nobody sees you hide the body. You quickly decide to hide the body in the desert, and take careful measures not to be seen driving. Finally, you reach the desert. You drive off road for a few miles, coming to rest in the middle of nowhere. You pull Vega from the car, her naked body shining in the sun. Now all you have to do is drive away. But then you see Vega's tight cunt, and luscious tits. What do you say, one more fuck for old time's sake?