--Sleeping with the enemy--

The joys of being a billionaire's daughter are about as fun as being a a billionaire's girlfriend. It's even better when your billionaire daddy and your billionaire boyfriend hate each other more then words can describe. The best part though is when one holds a party and you have to decided to stay with your billionaire daddy or secretly sneak away with your billionaire boyfriend. Hard to choose. Unless the party is a masquerade ball. Then you can hide in plan sight. Like tonight. Your billionaire daddy Bruce Wayne was holding his annual charity ball at Wayne Manor. Everyone was invited even Tony Stark, you're secret billionaire boyfriend. There are only two people Bruce doesn't like you to be around, Tony Stark and Oliver Queen. Not only to they compete in the business world but also the superhero world. But sweet little innocent 19 year old you had to go and fall in love with an older man. It's hard not to fall in love with Tony Stark. He's charming, sweet, funny... very good in bed. If Bruce found out you were sleeping with a man who was 23 years older then you he would kill you both. But tonight with both of you hidden by masks and with millions of people all around even Batman couldn't spot you.
"Miss (Y/N), Master Wayne has requested you make your way to the ballroom. Guest are arriving." Alfred said from the other side of your bedroom door.
"Okay, I'm finishing up. Thank you Alfred." you placed your mask over your eyes and smiled at the finished product. A black, tight, and short dress hugged your body. Gold shining 6 inch heels covered your feet and matched the gold jewelry that adorned your body. And the finishing touch a shimmering red and black lace eye mask that covered just your eyes leaving your lipstick red lips visible. You made sure your hair was still curled and walked to the ballroom.
"If you weren't my sister I would marry you." The sarcasm of your brother Dick Grayson never stopped.
"And if you weren't my brother I would have killed you by now." You smile and take the hand he offered.
"Please don't break your ankle in this golden torture devices." He looks down at your feet.
"I won't. But come dance with me. Someone has to start this party." You go to the band a request a good dancing song and return Dick. After a few moments other couples join you. Then after going through seven different dancing partners another person takes you the waist and pulls you into his chest. You look up and see the infamous Stark smirk.
"I do hope you are who I think you are. Because I have been looking for you." his voice is like velvet. "And I hope you are who I've been looking for all night." you reply and he chuckles. You dance for a few songs then sneak away to the balcony. Once the two of you are alone in a darkened corner he takes the masks off your face and his.
"It covered your eyes. That beautiful shade of (E/C) should never hide." He cupped your chin and leaned down to kiss you. Even in the heels he was taller. Not that you minded. "What do you say we go back to my mansion, which is bigger by the way, and make a party of our own?" he smirked and kissed your neck while you thought. But then you noticed the light in the sky. The bat signal.
"I'll be back. Stay here." You place your mask back on and walk as quickly as you can back into the party. You find your father and pull him away from the group he was speaking with. "(Y/N) darling if you want to dance with me just ask."
"Bat signal." you whisper in his ear and he nods walking away grabbing Dick when he passes. Once they are out of sight you take a glass and tap it getting the attention of the party goers.
"Hello everyone. My name is (Y/N) Wayne. I'm Bruce's daughter. I regret to say we must end this party early. As an unforeseen event has come up and must be taken care of immediately. Thank you." The guest collect their things and finish their drinks before heading out, leaving a single person.
"You are so good at that. When you're Mrs. Stark I'll have you do all the press things." Tony chuckled and took your hand.
"Is that your way of proposing? Nothing over the top?"
"You don't like over the top. So yes. Here do want this?" he gets on one knee and holds a huge diamond ring in his hands. "Miss Wayne will you marry me and become Mrs. Stark?"
"Of course Mr. Stark." he puts the ring on your hand and kisses it.
"This means we have to tell my father."
"Oh. Can't we just say surprise we are already married and go get married in Vegas? That way he can't say no."
"He still can't say no. I'm 19 I can make my own choices."
"Fine. Fine. We can tell him." Tony sighed.
"Come for dinner tomorrow, we can tell him then. And no iron suits. I don't want a fight. I love you."
"I promise. I love you too." He kisses you again and walks out. Tomorrow would be interesting.
*the next day*
"Who is coming over?" Bruce asked once again as he and Dick sat down for dinner.
"Someone very important to me Daddy. Please be nice."
"Oh little (Y/N) has a boyfriend. Who is it? Spider-Man?" Dick laughed then ducked when you threw a knife at him.
"If I had known there would be knife throwing I would have brought Natasha." Tony walked in like he owned the place and sat next to you.
"Stark, what are you doing here?" Bruce growled.
"Because daddy... we are getting married." you look at him with your big innocent eyes.
"What?! You and him?! No! No no no no no no." his hands balled into fist.
"Please daddy. I love him. He loves him. He saved me during the New York thing. Please daddy." you beg and take Tony's hand.
Bruce didn't say anything he just stood up and walked out. Dick looked you knew you were about to cry. "I'll talk some sense into his (Y/N). Don't worry." He goes after Bruce.
"You want to stay with me tonight?" Tony asks quietly as you sobbed into his shoulder. You nod and he helps you up and to his house. You hoped Dick was right and Bruce would come around to the idea. Hope was the key word...