[Slow down and let the edge fade away. Thrust at M=90 for 60secs]
Abby releases her grip on you slightly, letting you breathe. Julie continues to stroke you without pausing. Now her hand strokes your full length more slowly, letting you calm down a little. Abby pulls your face into her pussy rhythmically, fucking you and moaning as she approaches orgasm.
ABBY: Let's play a game Julie. When I pull him into my pussy and make him lick me, you stroke him hard and fast, but when I let him breathe, you stroke him at half the speed. But make sure you don't let him edge!
JULIE: I love it, let's play! But let me give him one more edge first. I love the feeling of his cock twitching, so desperate to cum.
ABBY: Of course! Slave, take a deep breath and hold it until you edge.
[Hold your breath and thrust as you like at M=120 until you edge]