Stop before you cum

You reluctantly pull your cock out of Kara's mouth. "If you don't stop, sweetie, you're gonna make me cum."

Kara giggles. "What do you want to do now?"

As an answer, you pull her to her feet. Both of you help undress each other, slowly. You pull her close to you, and you realize she is trembling.

"What's the matter, Kara?"

She looks at the floor. "Well... I'm a virgin. But I want to do it with you! I'm just afraid that I won't be very good."