V2 update:

Updated to increase photo realism. Not perfect, but an improvement over the original. Again I typically use a prompt that takes advantage of Dynamic Prompts extension. Here is the prompt I started with. You can edit the details in the prompt for instance to change locations, hair colors or other details. Enjoy!

(photorealistic:1.4), a perfect photo of a (couple: woman and man:1.4), different faces, different skin colors, different hair colors, {sitting | kneeling | laying down}, {??????? | ???????????? | ????????}, 18 years old, action shot, {cuddling | touching each other}, {ginger | blonde | brunette}, {petite | skinny | chubby}, {large breasts | medium breasts | small breasts}, (ultra fine body hair), {girl hairy ?????, | girl ????????????,} {at office, | in bed, | on cathedral alter, | on city rooftop,} (detailed faces), male, hairy, beefy, scruffy, manly, ?????, ????? ????????, uncensored, testicles

Negative:

(missing ?????:1.5), (swollen ??????:1.5), (giant ??????:1.5), (solo:1.5), (male ??????:1.5), (blurry), (extra fingers), (((deformed hand))), (detached leg), ((merged genitals)), (deformed leg), ((deformed ?????)), ((deformed ??????)), (((cartoon, anime))), (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale))

V1:

I created this model by accident while working on my other models. It seems to be very good at putting men and women together in shots. It is not nearly as good as a photo realistic model, but it is a fun one to play around with. I wrote a multiple choice type prompt that uses dynamic prompts extension, so if you want to try it out, make sure you have that extension installed.

I have tried to get my more photo realistic models to have this ability to combine men and women, but in a lot of trial and error, none of them do it like this one. You can check out my other models here: https://civitai.com/models/112013/acorn-is-spinning

Here is the prompt I made. You can edit and change the options and play around with it.

(photorealistic:1.6) a perfect photo of two people: girl and {(man with ????? ?????:1.1) | woman} having ???. full body shot, different faces, different skin colors, different hair colors, {sitting | kneeling | laying down}, {intercourse | ????????????}, 18 years old, {cuddling | touching each other}, {ginger | blonde | brunette}, {petite | skinny | chubby}, {large breasts | medium breasts | small breasts}, (ultra fine body hair), {girl hairy ????? | girl ????????????} {at mardi gras | in bed | on cathedral alter | on city rooftop}

Negative: (woman with ?????:1.5), (merged legs:1.5), (merged bodies:1.7), (twisted bodies:1.5), blurry, extra fingers, detached leg, merged genitals, deformed leg, deformed ?????, deformed ??????, cartoon, anime, sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale))

You still get a lot of merged bodies and ladies with big johnsons, but it's still fun to play around with.

Have fun.