Yep.

"I'm never giving up this body," you said, reflexively feeling yourself up to relish your new figure. "Cassidy only complicates that. So... yes. I want to go all the way. I have to."

Carrie nodded and smiled. "Then this is for you, my love," she said solemnly. Then she stepped over to your computer, highlighted Cassidy's file, and deleted it.

Just like that.

"It's done," said Carrie, the reality of what she just did dawning on her. "Oh my god. I just deleted my sister. Oh fuck." Her face turned red and she bowed over the desk.

You thought it was shock at first, but then you noticed the unmistakable motion of Cassidy's hips grinding against the edge of the table. "Fuck me," she growled, bumping her hips forward. "Dave, what - wow, mnnh, what did you make me do?"

"Carrie," you corrected her. "Call me Carrie now."

Carrie shuddered, then convulsed. "Oh fuck." She ground against the desk harder, knocking your keyboard aside.

You put a hand on her lower back, and smiled wide. You rubbed her from shoulders to ass. Cassidy had a tighter, smaller butt than her sister. "And you're my sister."

Carrie spun around so she was facing you dead on. Her own body. "Oh fuck. That's right. I'm Cassidy for you now," gasped Carrie. "Oh my god. This is... this is amazing."

Unable to stop herself, Carrie dragged you in and kissed you on the lips.

Kissing Cassidy was a lot like kissing Carrie, except she smelled minty where Carrie smelled of violets. The technique, unsurprisingly, was the same. But same with Carrie wasn't bad. It was wild, passionate, amazing.

You kissed and groped for a minute, till Carrie got control of herself.

You held your heads close, Carrie breathing hard against your lips. Her hands were in your hair. You were breathing hard too, one hand on Cassidy's modest chest, the other between her legs.

"What... happens now?" breathed Carrie, hanging on your every word. "We're sisters. You're me and I'm Cassidy. If people caught us like this..."