A/N: There will be some more smut in this part. Not that much but some! I will mark where it is though. There's also some cursing!

*Smut*

Crystal sighed softly as she woke up to the feeling of sunlight streaming in through the window, warming up her bare skin. She groaned softly and stretched herself out a bit in the sheets, smiling when she felt Peter's bare form against her skin behind her. Memories of the events of the nights before filled her mind. And she smiled as she recalled the pleasurable experience that led her to be laying here in Peter's bed naked. Suddenly she gasped as she felt a small pinch on her butt. She turned over to look and found herself face to face with her cheeky speedster.

"Now that's hardly a proper way to wish your girlfriend good morning." Crystal says with a pout and Peter smirks and she blushes knowing where this is going.

"Then please tell me what is the proper way to say good morning?" He asks and crawls closer to her, his pupils blown wide with lust and she giggles as he crawls back on top of her and she gasps as she feels his hand on her pussy and she smiles at him to confirm that it was okay and then he pushed his fingers in her.

She moaned from the stretch and he started pumping them in and out. His other hand lazily traced her nipple making it harden before he reached his head down to suck on the nub. She whimpered and bucked her hips into his hand, wanting more, needing more. Peter looked up at her and he got a mischievous look on his face that told her exactly what he was going to do next. She barely had time to process what was happening because in a flash Peter's head was between her legs and all she could do was moan and gasp for air as the way he expertly ate her out took the breath right out of her lungs. He flicked his tongue across her clit using his speed and she arched her back and cried out in pleasure. Peter spread her legs apart more so he could get even deeper in her and when he stuck his tongue inside of her and darted it in and out, licking her walls and then started vibrating it she lost it and came hard. Peter gave her a few more gentle licks to clean her up then wiped his mouth and smiled at her. He crawled back up to peck her lips and she smirked at the fact that she could taste herself on them.

*Smut ended*

"Good morning" He says and she just smiles at him and giggles.

"Good morning." She replies and kisses him again. "That speed of yours sure does come in handy in the bedroom." She notes and runs her hand through his hair as he rests his head on her chest. "I wonder what else you could do with it..." He perks up at this and she smirks.

"What did you have in mind?" He asks and she blushes a bit.

"Well I mean, you're so fast...I bet it would be real easy for you to get me off, anytime anywhere in literally under 30 seconds." She says and Peter smiles and kisses her again.

"Well what kind of a boyfriend would I be to deny you that request." He says and the two of them start making out again.

Peter groaned when he heard someone knocking on the door. But nevertheless he continued to kiss her, wanting to ignore the outside world a bit longer so he could just stay in this beautiful moment with the woman he loved more than anything in the world.

"Peter I know you and Crystal are in there please come open this door. I need to speak with her it's very important." Charles's voice says from the other side of the door and Crystal pushes him back.

"Pete..." She whines and gives him puppy eyes. "Don't be rude."

"But he's so annoying..." Peter whines. "I just want to stay here with you...in bed..." He starts caressing her sides and presses his face into her neck. "Naked...Where I can make sweet love to you all day and have you moaning my name-"

"Jesus Christ don't say such things about my daughter!" Charles exclaims then realizes his error.

Peter rolled off of her and quickly and they both sat up and looked at each other wide eyed. Peter quickly got both himself and Crystal dressed in a blouse and her favorite floral print skirt and opened his door to let Charles in. Crystal stared at him as he wheeled in the room and he couldn't take his eyes off of her. He had tears in his eyes and that's how she knew that what he said was the truth.

"You're my father?" Crystal asks.

"Yes." Charles says and Crystal covers her mouth and tears start to slide down her cheeks.

Peter wasn't entirely sure what to do. He didn't like the fact that she was crying. It made him sad too. But he wasn't sure if he should try to get her to stop or if he should hug her...Thankfully Charles seemed to have thought this through.

"Now now my dear child don't weep." He tells her telepathically and she cries from hearing his voice in her head.

Charles is about to reach out to take her hand but suddenly Peter is blocking his path and hugging Crystal, gently stroking her hair and kissing her tears away. As she buries her face in his t-shirt he looks at Charles and seems almost angry at him. He's confused. He didn't do anything to hurt her. He certainly would never want to do that. So why had Peter gotten so protective all of a sudden?

"Crystal..." Charles says and his voice cracks a bit as a few tears slide down his cheeks as well.

She picks her head up from Peter's chest and looks at her father.

"May I give you a hug?" He requests and Crystal leaves Peter's arms and leans over to embrace Charles the best she can. The chair made it a bit difficult but Charles held onto her nonetheless.

He pressed his fingers to her temple and began to filter through her memories. Memories of her as a little girl picking flowers in a meadow with a book in her lap. He soon found that that was a trend, most of her fondest memories were found on the pages of a book, in a world somewhere far away and far more magical than this one. If only he was able to be there, he had missed out on so much. He gripped her tighter and sobbed into her shoulder. Then he saw a vision of the purple tether that he had on himself and saw it leading towards a snow globe that had a crack in it. It ended there.

"I am so sorry I couldn't have found you sooner my darling." Charles says and something in Peter snapped and he sniffled and looked away.

"It's okay." She says and leans down to his level. "You found me now and that's all that matters."

"Let's make up for lost time shall we?" Charles suggests. "Would you care to spend the day with me? I want to learn everything there is to know about you my dear."

"I'd love to." Crystal says.

The father and daughter spent the day walking and wheeling around the campus. Hank made little finger sandwiches to test out a recipe and he gave them to the two of them for lunch. They were surprisingly good. Hank was very curious about Crystal. Genetically.

"How is it possible that her sister and father are mutants but she isn't?" Hanks asks.

"I'm not sure. Perhaps there's something about the X-gene that you've overlooked? Perhaps when paired with a certain allele it becomes recessive?" Charles suggested.

"You could be right." Hank says. "I'll look into it Professor." Hank says and leaves.

Charles enjoyed hearing about Crystal's favorite books and all of the places she dreamed of going. She also mentioned how Peter had promised to take her to all of those places one day. That part he wasn't too fond of. He had also been noticing every now and then that when he left Crystal alone for a few minutes he would return to her and find her a bit flustered, out of breath and disheveled. That was odd but he didn't think it was anything to be concerned about. But he was overjoyed that all of the students seemed to love and adore her and her them.

"Perhaps you could teach here." Charles suggests. "If being a doctor doesn't work out I'm sure you'd be a very handy assistant to Hank or even dare I say replace him." He whispers and Crystal laughs.

"I appreciate the offer but I honestly think that my passion is in healing people." Crystal says.

"Well I'm sure you'll do amazing at it." Charles assures her as they walk down the hall to his office.

Suddenly she disappeared right before his eyes.

*Smut*

Crystal took in a deep breath and gasped as she was suddenly penetrated by Peter's dick. In a fraction of a second she had gone from spending quality time with her father to being fucked by her boyfriend on some random person's desk.

"Again baby?" She smiled and asks breathlessly then cries out in pleasure as Peter starts thrusting harder into her.

"I can't help it I'm so horny for you today..." Peter moans and grips her ass under her skirt.

She took a minute to get her bearings and noticed that Peter had her panties in his back pocket. She rolled her eyes at how corny that was then gasped as Peter hit her in just the right spot and she gripped his biceps and moaned.

"Fuck you're so hot when you moan." He says and starts unbuttoning her blouse.

"Pete...What if someone comes in?" She asks as Peter starts groping her breasts.

"Don't worry. They won't be in here for about another minute." He says and she tenses.

"Peter! We have to get out of here-" She says then gasps as she feels a chill and realizes she's now naked on the desk. She blushes and looks up at Peter who was smirking at her.

"In and out in 30 seconds baby remember?..." He says and they both smile at each other.

He spreads her legs open again and thrusts into her. She moaned when she felt his dick vibrating inside of her then he started thrusting harder, and faster. Faster than he had last night. He was using his speed, oh God his speed! She felt waves of pleasure coming off of her in waves as Peter gave her not just one, but two orgasms in the span of 25 seconds before they both came and he pulled out. He took off the condom and threw it in the trash.

"I could have gotten you off even sooner but I didn't know how much you could handle and I didn't want to push you." Peter says and she smiles at him.

*Smut ended*

Suddenly she hears the door opening then finds herself standing in front of her father, fully clothed as if nothing unmentionable had just happened in what she now realized was his office.

"Peter!" Charles scolds and angrily rolls over to the man who was causally sitting in his chair reading a magazine. "Get out of my chair." He scolds.

"Pfft. Fine." He says then zooms over to Crystal and holds her hips and places gentle kisses on her neck.

"Do you have to do that in front of me?" Charles asks.

"Would you rather me do this?" Peter asks then dips Crystal and starts making out with her.

"Oh dear God why would you think I want to see your tongue invading my daughter's mouth in such a barbaric manner!" Charles exclaims.

"Well there's worse things I could be doing in your presence." Peter says and winks at Crystal making the girl blush.

Suddenly he stops laughing when he notices Erik walk in the room. Crystal squeezed his hand to remind him that she was there and would give him confidence.

"Erik." Peter simply acknowledges.

"Peter." Erik nods then nods to Crystal as well and then to Charles. "I came by to drop off these files for you."

"Thank you." Charles said softly, sensing the tension in the room from Peter and Erik.

He takes off the seal on them and throws it in the trash. Then he noticed something.

"Why is there a used condom in my trashcan?" He asks.

"Don't look at me." Erik says.

"Trust me I wasn't." Charles says and Peter stiffens.

Crystal gives Charles a harsh look and then gives her lover a hug and pecks his cheeks to try to take his mind off what had just been said.

"Don't go taking the high ground here." Erik argues. "Clearly you've made at least one mistake as well."

Erik didn't even have time to process what had just happened. In an instant he was staring at the ceiling and felt a terrible throbbing pain in his left cheek. His ears were ringing but he could make out Peter standing over him and Crystal trying to calm him down. And Charles just sat still in shock.

"I really should have used a condom." Erik mutters to himself and Charles just nods in agreement.

"Peter why did you just do that?" Crystal exclaims. "He's your dad!"

"Biologically speaking yes, but he's never been the real kind of father to me." Peter says. "And he had the audacity to suggest that your existence was something to be regretted..." Peter was about to charge Erik again but Crystal stopped him.

"Baby please don't hurt him..." Crystal begs and gives him those sweet puppy eyes that the speedster always succumbed to.

And of course it worked this time as well. He relaxed and pulled his woman into his embrace, holding her tight and kissing her temple.

"I only did because he insulted you." Peter mumbles into her ginger locks. "No one messes with my princess."

"Wait if the condom wasn't mine or Erik's then who's..." Charles starts.

His face pales when he notices Crystal's face go red and Peter smirk. He then notices the lacy fabric sticking out of Peter's back pocket.

"Peter did you just fuck my daughter in my office!?" Charles exclaims angrily.

"Maybe." Peter says with a proud smirk.

Crystal blushed, a bit embarrassed by the fact that now her father knew about her and Peter's secret adventures today in different parts of the mansion. But she also found his reaction hilarious.

"Peter..." Charles growled.

"We did..." Crystal says softly.

"And in the danger room." Peter adds. "Up against the bookcase in the library... on your other desk in your classroom-" Once he realized that meant they had done it on his desk Charles immediately took his hands off his desk and wheeled back away from it, hitting the wall and shaking some of the frames on it.

"Anything else you would like to add to the list?" Charles asks in an angry tone, not appreciating the young adult's snickers.

"I also took her bent over Cerebro." Peter says.

Charles slowly wheeled out to them and gave Peter a predatory stare.

"Give my daughter her undergarments back now!" He demands.

"Sure thing." He says and suddenly there's a breeze by Crystal's skirt and her panties were back on her.

"Not like that." Charles growls.

"What? You wanted them back on her." Peter says and holds his hands up. "I mean it's not like it's nothing I've never seen before." He winks at her.

"How dare you use her like some sort of sex toy for you to play with whenever you want!" Charles exclaims.

"I'm not! We both agreed to doing this right Cryssie?" Peter asks and she nods.

"Really Crystal?" Charles asks.

"Yes. Dad every time Peter and I made love today I gave him permission." She tells him.

"I would never do anything to her without her permission." Peter says honestly.

"Well what about mine?" Charles asks. "That's still not right! She's my little girl you can't just-"

"She's not your little girl!" Peter suddenly shouts and Charles gets quiet. "She's a woman. You weren't around for her entire life, and now you just roll in and think that you can just claim ownership of her! That's not how it works!"

"Peter-" Crystal tried to calm him but this time he just ignored her.

"It's her body! It's her choice and she willingly without any pressure chose me!" Peter says.

"Without any pressure my ass! I bet you've been pressuring her into this whole relationship. No delinquent son of Erik-" Charles rants but Peter cuts him off.

"He's not my father." Peter says. "He made that very clear to me yesterday. And just because Crystal's your daughter, doesn't mean you have any right to say what she can and can't do. She's an adult now she can make her own decisions."

And with that he sped off to God knows where.

"Pete..." Crystal says softly and goes to run out the door but Charles takes her hand and holds her in place. "Dad I need to go find Peter he needs me!"

"He doesn't need you. He's a grown man he can calm down on his own. If you go running off with him he'll just rob you of your innocence on some other surface in my mansion." Charles grumbles.

"We do more than just make love!" She argues. "I comfort him and make him feel like he matters. Do you have any idea how worthless he feels all the time? I'm the only person in the world that he thinks genuinely cares about him. So if he seems a bit clingy and needy...That's why. And I'm more than happy to spend all that time with him because he's an amazing man and I love him. Now let me go find him please!" She begs.

"Anything that came from that man could only hurt you." Charles tells her telepathically.

"You're wrong." Crystal tells him.

In a blink of an eye she's gone. Peter set her down on a bench on the rooftop balcony. He held her wrist in his hands gingerly and looked it over.

"If he hurt you I swear-" Crystal cut him off with a kiss.

"Baby what's gotten into you?" Crystal asks. "You're so upset, and I think I know why." She brushes a lock of his hair behind his ear. "You're jealous." He snorts.

"You think I'm jealous that you're spending more time with your dad than me?" He asks and laughs.

"I think you're jealous that I have a dad that wants to be my dad and you don't." She suggests. Peter stays silent.

"I'm right aren't I?" She asks.

"How come nobody likes me?" He asks her. "Am I that much of a disappointment that my own father just abandons me not once but twice while your real dad actually wants you?" He tears up. "Don't get me wrong I'm happy for you. I'm happy that Professor Egg wants to be your dad." She laughed at his nickname. "I just wish that my dad wanted me too." She pulled him into a tight hug.

"Peter." Erik says and the two of them look up.

"What do you want?" Peter asks.

"I want to try being your father." Erik says.

Peter's breath hitched and Crystal had to grip his bicep to help keep him upright.

"Y-you what?" Peter asks and starts to tear up.

"After what happened in Charles's office today I realized that I've really been a bit of a dick to you." He says. "And even though you're an adult now...You're still my son. And I should try to give being your father a shot...Even if I am about 26 years or so late-" Peter knocked him over as he sped over and hugged Erik, sobbing into his chest.

"I-I can't believe this." Peter says and sniffles. Erik pats his head.

"Why don't we go grab a beer?" He asks.

"I don't really drink." Peter says. "Fast metabolism, can't get drunk. But I'll have a drink or two for you."

"Good. Now if you'd let me get up we'll get going." Erik says and Peter quickly stands up.

"Right! Sorry..." He says sheepishly.

Crystal came over to him and gave him a long and sweet kiss.

"Want me to steal you a can or two?" He asks her.

"You kleptomaniac." She scolds and lightly pushes his arm. "Just one..." She adds softly and they both laugh. "I'll be right here waiting for you when you come back." She tells him and gives his hand a squeeze, knowing he needs that affirmation due to his abandonment issues.

"I love you." He says.

"I love you too." She tells him before he leaves with Erik.

A/N: Next part coming soon!