After his sister had left, Dipper had the worst breakdown in years.

He was sitting on the floor, his shaking arms around his legs, drawing them closer to his body. As if this position could protect him from whatever had made him cry. He didn't even know. He didn't understand. He hated it.
He HATED that he just wasn't able to understand this!
"B-Bill. Please talk to me. Take me to the mindscape. Please…"
Hot tears left stains in the shirt he dried them with. If Bill would make him fall asleep, he'd be able to stop the tears. Everything would stop.
"PLEASE!"
He screamed.

And it happened.
The world went grey.
Dipper took a deep breath and relaxed a bit.
The mindscape clearly comforted him.

"Bill…?" he asked weakly.
The demon was standing right there, but he was oddly quiet, as he had been all day except for when he had interfered while he was talking to Mabel. Interfered. Did he do that on purpose?

Bill still didn't say anything. He was simply looking down on him.

"Bill, I need you. Now. Please. I need…"
Dipper got up from the colourless floor and came closer to the demon. He cupped Bill's face with both of his hands and kissed him. Bill didn't react at first, but then he pushed Dipper away. It left the young man with a confused expression.
"W-what do you want me to do? I'll do anything, please, just tell me what—"
"Stop."

Dipper froze. He expected to get beaten up or something, expected Bill to tell him what he'd done wrong and then punish him for it, something like that. Something you would expect from a horrible demon that had once tried to cause the apocalypse. But Bill didn't do anything at all.
"As much as I love having fun with you, this isn't fun anymore", the demon said, his voice colder than ever. Dippers eyes widened. He could feel Bill's fingers under his chin, lifting up his face so he would have to look at him. But what he saw in the demons face was no lust, no thirst for blood, nothing like that.
It was concern.

"Pine Tree, you keep coming to me whenever something in the real world goes wrong. You want me to wreck you almost every day so you'll simply forget about everything and can go on pretending none of it ever happened. You forgot about the fact that Shooting Star's relationship went downhill because you literally asked me to fuck it out of your brain right after. Your words, not mine. Because you didn't want to deal with your sister being sad."

"My real world problems got NOTHING to do with you!" Dipper yelled, feeling his body shaking in fear. Not the kind of fear he liked. It was a crippling, horrible fear of losing the one thing that made him feel alive at all.

"Really, Pine Tree? You need the pain and humiliation that I can give you the same way other humans need drugs and alcohol. And guess what, I'm tired of giving it to you. I'm a demon. I play by my own rules, not by yours."

"WE HAD A DEAL!"

"You said it yourself, sapling. The deal can be read as only having to fulfill your wishes once."

"You can't go to anyone else! You told me yourself that you can't!"

Bill's eyes narrowed.
"Even my own boring dimension is more interesting than you right now, Pine Tree."
Something was off. Bill had expected the other to get desperate, begging him to stay.
But if anything, Dipper was getting angry. It wasn't like him.

"So, I'm just not interesting anymore, huh?"
Dipper was actually laughing. It seemed surreal to Bill that this was the same innocent kid that fucked over his plans for world domination 8 years ago.
"How about a new deal, then?" Dipper asked, smiling.

"You're suggesting a deal to me?"

"You can let me wake up, but you have to stay within my mind and talk to me for the rest of the day so I won't completely freak out. In return, I will do something to surprise you. Something to spark up your interest."

Bill had to admit that he was curious.
"All of that just so I'll stay for a day to comfort you? You need help, kid."

"I'm not a kid anymore, Cipher."
You are. Bill kept the thought to himself. To him, it seemed like Pine Tree never really grew up. He changed, but he was still a child.

"If that's all. Sure" Bill said, his right hand burning with the familiar blue flames, "Surprise me, Pine Tree. It's a deal."

Dipper seemed to relax and smiled a little.
He shook on it.
And he woke up right away.

I'll just make myself comfortable in your head then. You have the the entire rest of the day to surprise me.

Oh, I don't think it will take me that long.

Dipper smiled. Being inside of Dippers mind, the demon wouldn't be able to watch what he was doing. He'd only be able to hear and read his thoughts. As long as Dipper managed to not focus his thoughts on the task, Bill would soon enough have the surprise of his lifetime. And Dipper was actually very good at controlling his thoughts. Otherwise he wouldn't have been able to hide this one from Bill all these months.
He got up from the floor and almost fell over. His body was weak and exhausted. Oh, right. He hadn't eaten anything yet.

At this rate you'll die before the day ends.

I know what I'm doing, thanks.
He went to his room. There, in the corner, was a chest that once belonged to Mabel. A lot of her stuff was still in there. It was meant for childhood memories, old stuffed animals, photos of the past few years, postcards from Gravity Falls they got every year. Stuff like that. A treasure chest, kind of.
Dipper opened the chest and started looking for something, careful to focus his thoughts on something else entirely. And boy, did he focus on that something.

Stop thinking about having sex with me.

Dipper smiled.
Why, does it bother you?

I will make you regret about trying to manipulate me into what you want. You will do whatever I want, NOT the other way around.

Uh-huh. And how exactly will you make me regret it? I can't wait. Also, did you just admit that I can seduce you into having sex with me? I thought you just liked to hurt me, but you're actually into me, aren't you?

There was silence for a moment.

Maybe you can surprise me, but that doesn't mean I'll stay. Wasn't part of the deal. Never thought I'd say that, but I'm really done with you. I like my humans better with a little more emotion and-

Less like you?

Dipper grinned.
He had found what he was looking for. It was a gun, but not just any gun. It looked a lot like the memory gun that had erased the demon out of his Great uncles head, 8 years ago. But this one works a little… differently. If it worked at all. They had never tried it out before. There hadn't been a reason to.

He held it right to his own head.
Didn't even blink.
"Surprise, Bill."
Then he pulled the trigger.