The sex starts about halfway in at the "i'm scared" portion. Before then, there is some description of vomit in a non-sexual context.
*****
It was the day before the happiest day of her life. Pip was dressed in white and surrounded by friends and family at a fancy hotel right before the wedding. She'd never felt so important before. They had just finished the rehearsal. She had a hop to her step. Despite how happy she was, she did know that it could have been better.
"Why!" She heard her mother sob drunkenly. She would move from group to group to complain. "We were so happy!" Then she turned to Pip before she could awkwardly scamper away. "Your father, has he left yet?"
Pip nodded. It was unfortunate timing that her parents were talking about divorce right before the wedding. It wasn't something unexpected, and Pip had even seen in coming at times. Her father had still paid for everything and was going to walk her down the isle tomorrow, but had quickly made his escape before being confronted today. "Yes." Pip nodded. "He said it would be best to leave early-"
"I'm so sorry!" her mother sniffed with surprise, "It's going to be your big day!" She patted her daughters shoulder and stumbled away towards the elevator. "I'm so happy!" She sobbed.
Pip sighed. She'd get over it eventually. Their marriage hadn't been the most stable anyways. She turned and saw someone else moping on a nearby balcony and decided to give her a visit. She saw Emma there, nursing a plastic cup of something and staring out over a smooth lake with a mirror finish. Pip could see the moon off her eyes. "Congratulations." Emma nodded. The past few weeks had been strange. She wasn't her normal self, and for quite some time, Pip believed that the few strange events with Emma had been a dream. Some raunchy nightmare that had ended with Marks proposal. Emma had acted aloof since then, and was more busy than usual. "Well, I guess I'll be going." She poured the rest of the drink over the ledge and into the bushes before she turned.
"Wait!" Pip stopped her with a light touch. Emma looked angry, but hid it well. Pip stepped away. "I'm sorry. Are you okay?"
"Okay?" Emma asked. Pip knew the look of a woman who just wanted to run away. For a few long seconds she thought Emma would spit at her and leave. Thankfully, Emma sighed and leaned against a nearby wall, "I didn't think this would happen." She shrugged. Something seemed to have fallen off her personality with that shrug. She seemed very different, vulnerable even. "I thought you were just a phase of his." She explained. "Some girl that would run at the first sign of trouble. I've known lots of girls like that. They see their guy looking at another girl and drop him. But not you." She grimaced, "And I thought you just had a crush. Some childish thing. I didn't think you actually loved him." She took a deep breath. "And I didn't think he actually loved you back." Emma sounded sad. Pip didn't know how to respond to that. Emma's face twitched with a bout of rage. "You won." She said quickly. "Okay? You won! Is that what you want me to say?" She seemed angry. Pip stepped back. "You don't have to rub it in my face!" Emma seemed close to tears. That scared Pip. Emma looked away at the last moment. The thin veneer of control veiled her expression again. "Asking me to do this for you. So I would be right there and watching it happen up close. I guess you learned a lot from me. That was good. That hurt."
"It wasn't supposed to!" Pip whimpered. "I didn't want that!"
"Then why make me your maid of honor?"
"Because i-" Pip stopped herself. Why did she invite Emma here, on her happiest day. "Because I care about you." She admitted. "Because I like making Mark happy, and you do that. And because you feel like family. I don't have many friends, and you might be my best." She admitted.
"Wow." Emma blinked. "That's actually really sad." Pip chuckled. "You really didn't do this to spite me?" Pip shook her head. "I guess I underestimated you again." Emma looked amused. That was a better expression. It felt more right. "Well, now I feel a little bit guilty." Emma admitted. "About everything I mean."
"It's okay." Pip appreciated the almost apology. "I just can't imagine a future without you." She admitted. "It wouldn't feel right."
"I guess I also feel bad about, well-" Emma looked away. "Uh, I guess I should tell you, I did something kinda bad."
"Like what?"
"I was really angry after Mark proposed to you. So I might have, sort of, kind of, sexted your dad and sabotaged your parents relationship." Pip gasped. "It's what I do when I feel threatened okay? It usually works." Emma shrugged. "Anyways, uh, I guess I'll have to own up to that."
"I," Pip squirmed, "I'm glad you told me. You must have been really upset."
Emma winced, "That's also not all."
"What do you mean?"
"See, your mother is kind of angry too, so I told her to go to her room and I'll send up some horny stud."
"That's, uh, weird-"
"And Mark asked me where you were, and I gave him your mothers room number. "
Pip blinked as the pieces came together. "B-But Mark will know-"
"He had a couple of drinks." Emma shrugged, "I told her to keep the lights off, she kinda looks like you, and you know he's never actually fucked you so it's not like he would know the difference. Besides, he's probably real anxious to get it done even though it's the day before your wedding-"
Pip imagined it happening and realized how likely it was. "B-But-" Pip tried to think of anything to make this reality not be happening, "Tomorrow is our wedding night!"
"Yea." Emma winced, "I was really angry."
Pip felt her heart beat slow and begin to quicken. "W-what room?"
"Two oh five." Emma nodded. "But, I mean, they've probably already started-" Pip scampered off to the stairs. It was hard to run in her dress but she tried valiantly. Just as she reached the second floor she heard it. She stopped and listened. She heard deep grunts and groans. Pip's heart beat quickened as she walked slowly closer to her mothers room and heard the moans of a woman very familiar. Pip felt like she was wading through cold water, the dress weighing her down and caging her lungs.
"Oh, yea, baby, harder!" She heard her own mother cry out. Her heart beat fast as she reached the door and heard whines and whimpers. Was that what Pip would sound like? Was her voice so similar that Mark couldn't tell? Maybe he was just pretending not to notice. Maybe they both knew what they were doing. Her heart beat across her skin as she touched the cold door knob, stopped, gulped, and released it.
She felt trapped again, but not in a bad way. She was once again in a cage, and everyone outside of it was happy. Metal separated her from her love, and he was happy there without her. She felt out of breath. Her skin was sweaty. Who was she to interrupt? To ruin everything for everyone? Her mother was happy, her soon to be husband was happy, even Emma was happy. Pip should be happy too. She felt a single tear escape her eyes as she tilted her head to listen to the gasps and thuds. Her ear touched the wooden door. She could not tell if there were any whispers, she just heard the moans of pleasure. Her fingers gripped the ridges of the wood like bars in the cage. Her mouth was watering.
Tomorrow would be her wedding night. It was supposed to be the happiest day of her life. Her whole body was dripping as her heart beat faster than ever before. She heard herself mumble and felt herself humping the air and biting her lips. Her body rocked the door softly as her pure white dress was washed in her own her sweat, tears, and drool.
"Having fun?" The voice seemed loud. Pip's eyes focused on Emma as she emerged from the stairway. Pip swallowed and quickly left the door in embarrassment. "So you aren't going to stop this?" Emma asked curiously.
"They're happy without me." Pip smiled and looked down and away. "Happier, even."
"Bullshit." Emma rolled her eyes. Pip listened attentively. "Men are greedy Polly." She explained. "They'll never be happy with what they have. They will always be happier with more." Emma smiled, "I thought that's what you liked about Mark. It's what hooked me at least."
"But-" Emma took her hand. Pip blinked and let the larger woman lead her to the door.
"Open it." Emma ordered. "Unless you think he isn't worth giving everything too. In that case, I'm going in without you." Pip hesitated. Emma was right. She braced herself for anything. Pip gripped the cold metal with determination and turned it. Pip entered first. She found the light and flipped it, ready for whatever view of Mark that would show it's self.
But she didn't see Mark. All she saw was her buck naked mother writhing against a vibrator, masturbating on the bed, "AAK!" She covered herself quickly, "P-Polly! Knock first!"
"I'm sorry!" Pip slammed the door closed and tried to get the image out of her head.
"HAHA!" Emma laughed and pointed. "Oh man. Oh man you should have seen the look on your face!"
"You," Pip growled in embarrassment and anger, "You tricked me!"
"Yea." Emma was still laughing. "I wasn't lying though. Mark did walk in on the same thing you did a few minutes ago, and it was great. He just went to sleep in his own room." She slowed to a chuckle. "Oh wow, I was scared she'd finish up or something before you got here. That was priceless."
"Well, I guess I'll just head to my room then!" Pip said, trying to hold back her temper.
"You really wanted to see it though didn't you?" Emma grinned, "You were listening in for a while before I got here."
"Ew!" Pip realized she was right and shook her head. "Ew! Ew! I'm going now!"
"Wait." She obeyed against her better judgment. "You said you want me to stay for the wedding right?"
"Right." Pip nodded. As much of a jerk as she was, Pip still wouldn't feel right without her.
"Well, I want to make a bargain." Emma took a step forward. Pip felt more than a little intimidated. "Let me guess, Mark wants kids right?"