If she wants to or if she says the wrong thing.

So this realm is the realm of Chaos. Makes sceans you supose. "I think I want to talk with her a bit first." She sighs. "If she's hear for more then an hour you can't send her back. Don't keep her for too long." You start talking out loud so the unicorn can hear. "I'm Chad Thunder. You're trapped in tenticals because I summoned you to the realm of Chaos. I know you were running from something before I summoned you. Tell me what it was. If I think you're lieing, I'll send you back." She looks up at you. "Why did you summon me?" You sigh. "Aswer my question first."

She regains her composure. "Princess Celestia. Now it's your turn to answer my question." Celestia. Where did you hear that name before. Wait a minute, thats the name of the principle of the university you're going to next year. So her pony counterpart is royalty. Your Celestia got the short end of the stick.

You asnswer her question truthfully. "I was going to steal your horn, but I didn't know you were going to turn into a human. Why was this princess after you?" Her eyes go wide with fear at first, but her face changes. It's now a scowl of determination and anger. Not an ounce of fear left. You didn't think she could be more beutiful.

She keeps playing your game. "She told me that if I didn't change as a pony, she'd never make me an Alicorn. So I tryed to bind the Tiara of Magic to me. To **** it to make me an alicorn. However it was too powerful and instead I corrupted it. Now if I try to use its power, I'll become a demon instead of a alicorn. Why do you want my horn?"

You squat down. "I hate the world. Not your world, not Equestria. I've never been there. No. My world. The human world. Earth. I want to change it. And to do that, I need to concor it. Unfortunately I can't do powerful spells without a wand and unicorn horns make the best 1's. Well, besides alicorns but I'm not foolish enough to challenge 1 of those. What do you desire? More then anything."

She shouts. "I want to be an alicorn! I studied magic for so long and so hard. I want to be imortal. I want to live forever with Celestia. I did everything she ever asked me with no complaint! I loved her! I worshipped her as my goddess! I... don't really care about being an alicorn huh? I love Celestia, but she never thinks I'm good enough. I... I... I want to hurt her. I want to make her feel like she makes me feel. Never good enough. I'll help you get another unicorns horn, but I want in. I'll help you concor Earth but only if you help me concor Equestria."

She knows how to get you a unicorn horn without you going to Equestria and potentially getting caught by an alicorn? "How?" She struggles in her binds. "I don't know yet but I'll do anything to get that horn." So she got the ambition of a supervillain but not really good at thinking things through and she also seem impulsive to boot.

You sigh. "You don't have to get me a horn and I'm not against working with you, but promises aren't enough. I have a spell that makes it so if we make an agreement, neither of us can break it. I can't back stab you, you can't back stab me. If you can't agree to making a unbreakable agreement with me then thats it. I'm sending you back to Equestria, no ifs or buts."

She looks away, then back at you. "If we can come up with a deal that doesn't screw me over, then fine. I'll help you concor Earth if you help me concor Equestria. We work as equal partners. I don't treat you as a lacky, you don't treat me like a lacky. We treat each other with mutual respect. Then after we've concored our worlds, you never try to take Equestria from me and I never try to take Earth from you. How's that for a deal?"

You think about it. Yeah, this deal is great. Everything you could possibly hope for. Unfortunately you start having dark thoughts again. The lifetime of lonlyness. How nobody loves you. How Cosmo isn't really your friend. She just wants to use you as a magic battery. You squeeze your face face in frustration as your legs feel weak.

She gets confused and panics seeing you do this. "Whats wrong?" You walk to the nearest wall. You lean your back against it and slowly slide down. "Care about me." She looks at you confused. "What?" You raise your voice. "I can't **** you how to feel but please. Please! For gods sake just try to care about me. I'm so fucking alone. If you can't bring yourself to give a shit about me, then fine. But please try."

Her eyes go wide with fear again, however this time it doesn't emidietly go away. Its not shock that you were planing to steal her horn like before. She's genuinely terrified that she's being held hostage by someone just as emotionally unstable as her.

You walk out of the basement and get a glass of water. You look yourself in the mirror. You're crying. You talk to Cosmo in your head. "Did you hear that?" She talks to you in a surprised voice. "What? Oh, no. I mean I can hear all your thoughts if I want to but friends don't do stuff like that." You sigh. "I can't control my thoughts. So just because I think something, it doesn't mean I believe that or want that to happen." She responds to you. "Yep. So, what are you going to do with that unicorn? You can keep her hear a bit longer but not for much longer." You sigh. "I'll send her home." You walk back down the stairs to your basement.

The unicorn blurts something out the moment she sees you. "You're just like me." You look at her confused. "What?" She explains. "When I'm normal I act tough and I can do some really messed up stuff, but sometimes my emotions overwhelm me and I do and say stuff I wouldn't normally want to do or say."

You walk over and sit on the floor next to her. "We're sick. We didn't get the love and attention we needed when we where kid's and now we're both fucked up as adults." She leans up against you. "Then lets be sick together. King and Queen of Earth and Equestria. If no 1 will love us, lets love eachouther and make both worlds burn for not giving us the love we deserve."

You eyes go wide. This isn't heathly. You've known each other for less then an hour and you're already considering marrying her. This needs to stop. Send her back to Equestria. Go find a really good therapist. Its not too late to be a good, normal person.

You lean down and kiss her on the mouth, casting the unbreakable agreement spell.

This is probably the worst decision you've ever made in your life but you don't care. The world made you like this and now you're going to make the world pay for it. You break the kiss. "My name is Chad Thunder." The tenticles unrap her. She sits up. "Sunset Shimmer."