Teasing before pleasing.

"We need to get him all worked up," Karen says, "It will be worth it- trust me."

She grabs your hand and leads you to the couch and lightly pushes you down onto it. Katie looks nervous, but also excited.

She turns to face your girlfriend and reaches her hand out to her next. She takes it acceptingly.

Karen pulls her in and kisses Katie hard on the lips, less surprised this time. The kiss starts out strong this time and stays that way.

"I want to strip you now," Karen says, "He really wants to see me naked...but he has to wait."

Katie smiles at you and nods back at Karen.

She reaches down and untucks Katie's purple blouse, pulling it up slowly. You see Katie's breasts- a familiar, but lovely sight- as the blouse is taken off and tossed aside. Karen bends down and starts to unbutton her jeans next.

Your girlfriend's pants get pulled down next, revealing a black thong. After they come off, Karen takes her leg up on her shoulder and pulls down the panties next.

Karen grabs Katie's ass and pushes her closed lips against her pussy. She giggles nervously as she knows what is going to come.

"I've only had one other lady go down on me," Katie says, "I'm a little nervous."

Karen blows on her pussy softly, causing her whole body to shiver.

"Was he there when that happened?" Karen asks.

"No, it was in College. We hadn't met yet," Katie says.

"It's alright," you reply, "I wasn't exactly a Saint in College. Besides, it sounds hot."

"Really?"

"Guys love girl-on-girl," Karen says, rubbing her nose against Katie's pussy, "Tell him about what happened while I get to work."

Katie looks at you and you nod.

"Alright, so- ooh- here's what happened that night..."