Borrowing the character of Natalie from Smarch's pilot. The song is No Secrets from the movie Secret Admirer by Van Stephenson. You can hear the song on youtube.
Casey being pissed was an understatement. She usually wasn't one to drown her sorrows with alcohol, but she had to get a drink. She went to a bar and downed shots of tequila. She was got tired of the taste and wandered the city to clear her mind. She ended up at Olivia Benson's apartment. She slipped into the complex as someone walked out. She knocks on Oliva's door. "Olivia!" Casey slurs.
"Casey?" Olivia is surprised by her unexpected visitor. "Are you drunk?"
Casey pauses, thinking. "I might be a bit drunk. You and Alex! How could you?"
"Liv, who's at the door?" A voice calls from the kitchen.
"Casey."
"Casey? Alex's Casey?" Natalie asks, as she peers from behind Olivia.
"How could you Alex?" Casey cries, tears falling freely. "After last night... I though..."
"Casey, what are you going on about?" Olivia asks calmly, escorting the disheveled ADA into her apartment.
"Alex and you. You're not denying it. She's here with you and not me. It's all my fault because I wouldn't hold her hand in public and acknowledge our relationship to even our closest friends."
"Wow, Alex really knows how to pick 'em," Natalie whispers to Olivia.
"Not helping, Nat" Olivia whispers back.
"Casey sweetie, that's not Alex."
"Don't play mind games with me Olivia! That's Alex!"
"Not, that's Natalie Minka, her cousin."
Casey wipes away her tears and looks at the tall blonde.
"Cousin? But they're identical!"
"Really?" Olivia asks, her head tilting to the side as she studies her girlfriends features. "I don't see it."
"I obviously dress better and have better taste in women," Natalie says, a bit snarky, channeling Patrick Bateman.
"Not helping, Nat!"
"Oh no! If this isn't a dream, then it's a nightmare!"
"Why? Alex isn't cheating on you. It's a good thing."
"No, Serena, Abbie and I left really nasty messages on Alex's voice mail. She's going to kill me."
"Casey, Alex is my best friend and I just have one question for you," Olivia says, looking straight into Casey's eyes.
"What?"
"Do you really love her?"
"Yes, with all my heart," Caseys says as she nods vehemently.
"Okay the. We'll help you."
"What?" Natalie exclaims. "Olivia, we hardly get to see each other as it is. Can't we call and call Alex?"
"No! I have a most excellent idea!" Olivia runs to her closet and takes out an old box. Casey and Natalie follow her into her room.
"What is that monstrosity?" Natalie asks, shuddering.
"A stereo boombox. I spent all summer working for this sophomore year in highschool," Olivia answers proudly, going through another box of cassettes.
On the other side of town, Alex finally figured out how to find Casey using the GPS on their phones.
"She's at Olivia's apartment."
"Let's go there," Serena says.
"Wait, let me get Casey some lilies,"
While Alex pays for the lilies, Abbie calls Olivia.
"Olivia, we're with Alex. Is Casey there with you?"
"Yeah and she's hammered. What did you two do to her?"
"Me?"
"Yeah, you and Serena."
"We didn't...well...you were the one holding hands with Alex's doppelganger ready to jump her in the restaurant!"
"Nevermind already. Just get Alex here. I know how to fix this."
"How?"
"Operation: Spaced."
"You can't use Operation: Spaced. That's for emergencies only."
"This is an emergency. I want to spend time with my girlfriend without Casey sobbing in the same room. And Alex and Casey can live happily ever after."
"What about Serena and me?"
"I'll stop Alex and Natalie from killing the two of you."
"Fine."
Olivia makes Casey go out on the sidewalk and wait for Alex to come by. Abbie texts Olivia that they're walking around the corner. Olivia hands the heavy boombox to Casey and presses play. Alex round the corner and sees Casey with a stereo over her head blasting "No Secrets" by Van Stephenson.
"Oh my god it's like Say Anything," Serena whispers to Abbie.
Olivia takes the stereo out of Casey's hands and nudges her to run to Alex.
Alex jumps into Casey's arms.
"I'm so sorry I jumped to conclusions about..." Casey starts.
"Do you mean it? Your feelings aren't a secret anymore?"
"I mean it," Casey says as she kisses Alex in the middle of the street.
Casey opens the door to her apartment and the smell of roses overwhelm her senses before she turns of the lights.
"Alex?"
"We might have gone overboard this time," Alex says as Casey marvels at the amount of roses in the apartment.
"I love you Casey."
"I love you Alex."