Author's note: thank you so very much for all the kind reviews so far. Yes, I left a bit of a teasing cliffhanger last time, and I am doing it again here. But as you'll see, I always deliver. Also, I felt the story felt a touch more humor. Hope you agree.

Chapter 5

Dr. Brennan whimpered and thrust her hips off the bed, practically throwing Seeley's hand off her groin.

"Is that the 'technique' you were speaking of, Dr. Brennan?"

"You know it is, Booth." She panted. "You've been using it for weeks. I can never figure out exactly what you're doing, and you refuse to describe it."

"That's because it's my personal best move, Dr. Brennan. I consider it a trade secret, and I can't divulge it to anyone. If I were to teach you exactly how it's done, you might decide that you don't need me around any more. But might I point out something?"

"What's that?"

"Bones has never figured out exactly what I'm doing. But Dr. Brennan has never experienced it, and Dr. Brennan has never applied her keen intellect, her stunning perceptions, her brilliant insights, and her encyclopedic knowledge of human anatomy to the problem. Why don't you see if Dr. Brennan can figure it out?"

When Seeley had first proposed this little experiment, Bones had been a bit concerned that the clinical aspects would deprive her of the pleasure of the sex. She worried that she'd be too involved in describing what was happening to "lose herself in the moment," and not properly enjoy the whole thing. But it had seemed important to him, so she figured if it wasn't as enjoyable as their other sessions, that would be her present for him.

Instead, though, she found it even more arousing than normal. To accurately report on the session, she found herself focusing on every detail – instead of simply enjoying the contacts, she was studying each and every aspect of it, and consciously noticing many things she'd previously just experienced. "Dr. Brennan" was actually getting far more pleasure out of Seeley's attentions than "Bones" had.

With that in mind, she closed her eyes and focused all her attention on just what Seeley's hand was doing to her.

"First, the easy part. Your middle finger is teasing the throat of my vagina, stroking my inner lips and occasionally penetrating me, but only as fas as your first knuckle. And that reminds me of something that I probably should mention to you - could you stop what you're doing for a moment?"

"DAMMIT, BOOTH, I TOLD YOU TO STOP!"

"I did stop!" he protested.

"No, you stopped AND YOU REMOVED YOUR HAND. Return your hand to my vulva immediately!" He promptly did so. "Now put your fingers back the way they were. There, that's better."

She settled back on the bed. "Now, as I was saying, I have noticed that you never fully penetrate my vagina with either your fingers or your penis or that one time you used my..."

"Ahem."

"Oh, yes, you don't like me mentioning that. Anyway, you always wait until you are absolutely certain I am fully aroused, and I greatly appreciate that consideration. In fact there have been times I have actually grown impatient for you to recognize I am prepared and ready for you, but I have never said anything because I do appreciate the concern behind your reticence. I would not want you to change that, but I did think it important that I acknowledge it and express my appreciation for your consideration."

"You're... quite welcome."

"Now, you may resume your stimulation."

He promptly did - he'd learned his lesson.

"You're using the tips of your thumb and index finger to… manipulate my clitoris. You're using a very slow rhythm to work my clitoris back and forth in a manner that is… considerably genter than what would be… considered a 'pinch,' but there are similarities. Your fingertips are lying above and below and …slightly to the left of my clitoris. You're slowly increasing the pressure on my clitoris and working your fingertips to the right, until my clitoris… well, 'pops' between your fingertips. Then you slowly reverse the process. And every now and then you… briefly take your fingers away from… my clitoris and caress down towards my vagina… which I enjoy but don't quite understand."

"Think about it, Dr. Brennan. What purpose would such a move serve?"

"Um… I'm not certain. But if I were to… venture a theory, then I'd say… that the 'popping' of the clitoris is aided by… lubrication of the fingertips, and… you're renewing the layer of my vaginal fluids on… your fingertips to… continue the gliding over my clitoris." "I think I can even feel the ends of your phalanges through the pads of your fingers." She laughed for a moment, then wiggled her fingers in the air. "Phalanges! Phalanges!"

Booth paused for a moment, confused. "Huh?"

She quickly dropped her hands. "Never mind, I'll explain later." Then she smiled proudly. "I figured out your 'secret technique,' didn't I?"

Seeley smiled back at her, with a similar pride. "Took you long enough. And for your reward, how about… this?"

Dr. Brennan's eyes slammed shut as her head snapped back against the bed and and a deep, deep moan escaped her throat.