I tried to lie still.

My hard cock was deep in my fiancées mouth. Her lips were warm around my shaft. I could feel the breath from her nose against my balls. She was so wet, so welcoming. I tried to think of other things. It was impossible. My hips shuddered slightly. I couldn't resist any longer. I grabbed her head, held her in place and filled her mouth with my cum. She swallowed without complaint, taking everything I had to give her. When she finished she looked up at me and laughed. There was the smallest hint of cum on her lips.

We were supposed to be posing for a painting. My fiancée, Anne, had taken an series of art courses and had discovered that she had an exhibitionist streak. She started posing privately for some classmates. One, Agnetta, had proved to be safe, comfortable and fairly lewd. Once I'd seen the pieces she'd done of Anne, she asked us if we'd do some sexual poses for her. It was proving to be more challenging than I expected.

I looked around the studio, trying to recover and get horny enough to continue. The only artwork in the studio was increasingly graphic sketches and paintings of Anne. Which, admittedly, felt very strange. Agnetta was an elderly woman, in her late 70s. The last person you would have suspected to produce these lewd, even obscene, artworks.

They hadn't started that way. Anne had been very excited to pose for Agnetta. The initial plan was to pose like the sculpture "Nymph with a Shell" by Jean-Michel Othoniel. She had worn a light linen shift and stretched out on the studio floor.

As Agnetta drew her preliminary sketches Anne confessed that she was posing to fulfill her exhibitionist fantasies. Agnetta was pleasantly suprised. She gave Anne permission to show as much or as little as she wanted. Anne didn't say much for a while after that. She just posed as Agnetta sketched. It wasn't until almost half an hour had passed that she spoke up.

"Would it change things dramatically if I was nude?" She asked

"Yes." Agnetta laughed. "But I'd love to see it."

Anne quickly stripped and stood in front of the much older woman, showing off her young body. Her nipples got very hard. She flushed and could feel herself getting wet. It felt so good to show off. She lay back down and Agnetta began to sketch again. Agnetta asked how Anne felt, wanting to make sure she was comfortable.

Anne was on the verge of giving a casual response. Just reassuring the old woman that everything was fine. Instead, she decided to be truthful. Very truthful. She didn't want just her body to exposed, she wanted to bare her psyche. She told Agnetta exactly how she felt. Hot, wet, incredibly horny. She could feel her heart pounding like thunder in her ears. She felt like there was a red pulsing cloud over her concious mind. She wanted to show-off, to roll on her back, spread her legs and show Agnetta her center.

"Show me." Agnetta said, equally forthright.

Anne rolled on to her back and spread herself wide. Having Agnetta stare at her pussy was intoxicating. She started to masturbate and the old woman started to sketch furiously.

Anne came on her fingers. At the last moment before her orgasm she looked up. The old woman smiled as Anne shuddered and twisted on the floor in front on her.

Afterwards, Anne quickly dressed and left, overcome with embarrassment.

The next time they saw each other was in class. Each student was supposed to present their work from the week before. Anne tensed up when Agnetta started to present, but the old woman showed an incredibly bland landscape. She got lower marks for failing to be bold, to make any sort of statement with her art. After, Anne approached her and apologized for running out so quickly. She told Agnetta that she was suprised she hadn't shown her real work and the old women assured Anne she'd never do anything without Anne's permission. Tentatively, Anne asked if she could come back.

When Anne returned to Agnettas studio, she intended to explore her exhibitionist fantasy to the full. She wore sexy lingerie, with no panties. She lay down on an overstuffed couch and spread her legs wide, letting the older woman see her entirely.

While Agnetta sketched and painted, they talked. Anne found herself feeling completely safe. The two women talked and again Anne bared her soul. She told Agnetta about losing her virginity and her first anal. She talked about discovering that she was bisexual and about the first time she'd fucked one of my friends.

Anne kept coming back for more sessions. Each time the poses got more lewd and the confessions more graphic. She masturbated with objects from around Agnettas house, a plastic plungers, Agnettas hairbrush, even shared Agnettas vibrator. She let the woman paint a close up of her pussy when she was menstruating, both with a tampon in and without. She painted an image of Anne's tight little asshole, while Anne bent over and spread her cheeks apart.

Anne confessed that she wanted strangers to run a train on her, that she wanted to get fuck by a cock so big that it felt like it was tearing her apart, that she wanted to deflower an innocent virgin woman who'd never thought about lesbian sex before.

All this she did without telling me. She was really embarrassed to get off so intensely with a woman old enough to be her grandmother. She was terrified that I'd be repulsed.

It came time for Agnetta to start her final project. She remembered how Anne had been scared at that first class, so she was hesitant to suggest it, but she wanted to do a massive rainbow colored portrait of Anne's pussy. Anne agreed immediately.

The portrait took a long time. Hours of Anne sitting on an elevated stool, Agnetta examining her extremely closely. It felt like hours and hours of edging. Anne was horny all the time. Agnetta asked Anne to refrain from masturbating or sex during the entire time it took to complete the painting.

Finally, Agnetta told Anne it was complete. Immediately Anne's fingers went to her clit. It pushed her over that edge she'd been riding. For the first time in her life Anne squirted, hitting the back of the canvas.

Agnetta got an A.

And Anne and I started posing together.

The Chronology of Anne