Version 2:

Strength: 0.7+, ac_mutualmast (also works without trigger)

Re-trained with 200+ images, explicitly with:

spread_pussy, clitoral_stimulation, fingering (choose one)

Optional: blurry_foreground to blur the pov penis and add more depth, and also enforce some distance between the two.

Base prompt:

ac_mutualmast, pov, penis, pussy, masturbation, mutual_masturbation, {spread_pussy|clitoral_stimulation|fingering}, blurry_foreground

All demo pics with 0.8 strength, the brilliant checkpoint indexed v1b, cfg 5, 30 steps, no detailing, 832x1216.

I'm super happy with this version. It seems to be highly transparent and consistent, but please play with it and leave feedback :)

The full blown rng block for the demo prompts was

ac_mutualmast, pov, penis, pussy, masturbation, mutual_masturbation, {spread_pussy|clitoral_stimulation|fingering}, blurry_foreground, {fat mons|long labia|erect clitoris|pubic hair|}, {aroused|smile|evil grin|seductive smile|smirk|smug|girl pinching own nipple|girl groping herself|girl pulling own clothes|v|thumbs up|twirling hair|shushing|middle finger|\\m/}, {half-lid eyes|looking at viewer|looking down|looking up}, {lying|reclined|one leg raised|legs behind head}, {pussy_juice|sweat||||cum on breasts}, {naked|clothed female|open clothes|underboobs|nipple slip|panties around one ankle|panties around thighs|panties pulled aside|covered nipples}, {clothed|naked} male, {|large|huge} {|veiny} penis, {from above|full body|cowboy shot|pussy close-up|foreshortening}, 

plus some quality, style/location, and character directions.

[old stuff starts here]

Version 1:

This is such a pain to prompt, so I created a Lora: Mutual masturbation, but everyone sticks to their own private parts. Usually when you try to prompt it, the girl grabs the penis..

Strength: 0.7+

Minimum recommended:

artyclaw_mutumast 1boy 1girl female_masturbation male_masturbation penis pussy spread_legs in_heat blush

(or any variation at the end)

Should also be fine as a penetration starter for i2v.

Enjoy, and show off your results.