I mentioned this one on my Miraculous fan fics and it has a sequel story (This one might be long).
Today was the day, Marinette was going to do it. She was going to ask Adrien to the Valentines dance tomorrow night. Alya was the one arranging it and she had made it a girls pick dance. Marinette suspected this was so that she had to ask Adrien. She took a deep breath and walked over to him.
"Um Adrien," Marinette tapped his shoulder.
"Oh hey Marinette," Adrien turned around to her.
"I you go dance to Alya's," She squeaked.
You can do this Marinette, she remembered Tikki's words from this morning.
"You go to Alya's - to her dance - dance with me," She had stumbled over her words but at least it made sense.
"Um," Adrien bit his lip,"I don't kn-"
That's when Lila came running over and hugged Adrien, "you're coming to Alya's dance with me, right?"
"Why don't you leave him alone Lila," Marinette yelled, drawing attention to them, "Adrien and I both see through your lies. A nice, sweet, perfect guy like him doesn't deserve a lier like you."
Lila laughed,"you think I'm the lier Marinette, all I've done is try and become friends with you. You're the lier. Do you have proof that I'm lying?"
"Um, no," Marinette tried to think of a reason that didn't revel she was Ladybug.
"When Lila first came to school and said she knew Ladybug, but she didn't," Adrien spoke up.
"What's your proof, Adrien," Alya asked.
"I was hanging out with Lila when Ladybug came up to us and told me she never knew Lila before that moment," Adrien said remembering that day.
"How do we know Ladybug wasn't lying," Lila countered.
The crowd all agreed with her, even Adrien couldn't find a good counter argument.
"Why are you so against Lila, Mari," Alya asked.
"I didn't think you'd be so mean to one of our classmates," Rose added, this made her shrink.
The class continued bombarding Marinette with questions that kept bringing her down. Lila had warned her she would turn all of Marinette's friends against her. Marinette pushed through the crowds, tears streaming down her face. She was a fool to call everyone there her friend, Lila had all of them wrapped around her finger. None of Marinette's friends ran after her, but the last person you'd think did, Chloe.
Marinette ran into the bathroom and sat in one of the stalls, "She was right, Tikki, she turned everyone against me."
"You still have Adrien," the kwami told her.
"What's the use this will just happen again," Marinette sobbed,"She will always win. How am I to expose her without telling everyone I'm Ladybug. It's hopeless."
Lila smirked, she had done it, she had everyone against Marinette and there was nothing the girl could do to stop her. After sneaking away from the crowd Lila pulled out her phone a dialed a number.
"You know that girl you've been trying to akumatize?" Lila said," you should go to her, because I've done it."
"Thank you, Lila," Gabriel said,"I've been trying to get to her for quite some time."
Gabriel hung up before saying, "Nooroo, dark wings rise," He transformed into Hawkmoth and focused on Marinette's dark feelings, "aw someone who's been abandoned by everyone she trusted, the one who's telling the truth no one believes. Her pain is unlike anything I've felt, this one will be quite powerful," He soon created an Akuma, as it flew away he called, "fly away my little Akuma and evilize her dark heart."