Intense

You wake to the sound of soft moans and the slick rhythm of fingers moving in wet flesh. Your eyes open to see your wife sitting naked at the desk writing in the clinic journal. One hand grips the pen while the other works between her spread thighs, two fingers plunging steadily into her glistening pussy. The sight makes your cock harden instantly. The serum from yesterday has left you sensitive and ready. Your shaft throbs with every heartbeat.

She glances back at you, eyes glazed with lust. "It will not stop. I keep thinking about yesterday. About Dr. Marcus stretching me open while you watched."

You pull her back to bed. She straddles your face immediately lowering her soaked pussy onto your mouth. You lick her eagerly tasting the sweet tang of her arousal mixed with remnants of your cum from earlier. She grinds against your tongue moaning loudly. Her juices coat your lips and chin. While you devour her she leans forward and takes your cock into her warm wet mouth. The sixty nine position feels better than it ever has. Every swirl of her tongue sends sparks up your spine.

You suck hard on her clit and push your tongue inside her. She cums fast shuddering and flooding your mouth. You keep licking through it until she pulls off and slides down your body. She sinks onto your cock in one smooth motion. Her pussy feels incredibly hot and silky. She rides you hard breasts bouncing with every downward slam.

"I loved feeling him so deep," she gasps. "I want it again. I want a big thick cock fucking me while you kiss me and touch me."

Her words drive you wild. You thrust up to meet her picturing Dr. Marcus pounding her from behind while you hold her. The image pushes you over the edge. You groan and pump rope after rope of cum deep inside her. She keeps riding grinding her clit against you until she cums again walls milking every drop from you.

Afterward you both lie tangled breathing hard. The serum keeps you from softening completely. Your cock twitches with renewed interest in minutes. You take the daily oral supplement together. The warmth spreads through your chest and groin almost immediately.

In the shower you press her against the tiles and fuck her from behind. The hot water runs over her back as you drive into her cum filled pussy. She pushes back meeting every thrust moaning about wanting Mahli to lick her clit while a man fucks her. You imagine the scene and explode again filling her with a second load. Cum and water mix and run down her legs.

The rest of the day becomes a blur of need. You try to work but your mind keeps drifting to the clinic. Your cock stays semi hard constantly. Twice you find your wife touching herself and join her. Once you fuck her over the kitchen counter after lunch. She describes wanting double penetration next time. One cock in her pussy and another in her mouth or even both holes at once. You cum so hard your vision blurs.

By evening your balls feel drained but your desire remains strong. You eat dinner with constant touches and kisses. After the meal she drops to her knees in the living room and sucks you slowly. Her tongue swirls around the head while she looks up at you.

"I want to watch you fuck Mahli next time," she says between licks. "I want to see your cock sliding into her while Kai fucks me right beside you."

The filthy image makes you throb. You pull her up bend her over the couch and take her again. This time you last longer stroking deep and steady while she rubs her clit. You both cum together her pussy clenching rhythmically around you.

Later in bed you hold her close. Your hand rests on her breast thumb brushing her stiff nipple. The serum has changed everything in just one day. You feel more connected to her than ever yet the new hunger for variety burns bright. Watching her get fucked by other men turned you on more than you expected. The thought of doing it again soon makes your cock twitch against her ass.

You fall asleep with vivid dreams of the next session. Strong hands on your wife's body. Her moans mixing with yours. Thick cocks and eager mouths exploring every inch of you both under the clinic lights. The therapy is working exactly as promised and you cannot wait to go deeper.