Gay couple with genetic baby?

If you’re just looking for screenshots, you could get someone pregnant and say they’re the surrogate, then age that baby to young adult, remove their family connections, and make the baby-now-adult a townie. You could even move the baby in with your couple until it turns to toddler, then replace with your actual toddler you made in CAS. If you don’t mind playing like that.

There should be an option in friendly saying "Help with a Baby". Basically you can ask any random woman, not pregnant and if she'll accept, to go with one of your homosexual characters to the hospital for an hour or two and then they return with a 100% of pregnancy but only one baby will be born.

It should work the same way for a Lesbian couple as well, but with a random man, if he accepts, again it is to the hospital for a few game hours with the one women getting pregnant who went with the man.

Well maybe not completely a random male/female, maybe a checkpoint in the friendship relationship status needs to pass, say "Liked" which is about 35% into that bar? In any event the random woman who gives birth or the guy who passes the gift of life, they have no relationship with the baby.

I'd also go about restricting some men and women and give them a trait "Same Gender Romance", meaning they will only date and marry people of the same gender to themselves. i'm sure there is a way to allow other parts of the LGTBQ movement to have a role in the game as well. I mean you wouldn't want to see a girl hitting on a guy who has no interest in her and so someone who knows less wouldn't understand that and attempt to get them to enjoy themselves. by putting down such a restriction, it adds an extra mechanic to some of the sim population on who they wish to be with, rather than forcing a pair that shouldn't be.

Also the restriction should be an option when children reach their teenage years on age up, if they wish to be exclusive to SGR or the usual way.

Make a mom in CAS and then have your couple try for baby. Once you have your babies. Delete the mom. Your genealogy will still show them being related to their Dads.
Or do the above but don't delete her. Have an alien or vampire wipe her memory. It sets the relationship bar to 0 and she will not contact them.
If you like to use MCC, there is an option to "forget sim" that does the same thing. Thats what I do.
I like MCC for that reason. Male pregnancies weird me out to no end, so my gay couples happily adopt or have surrogates. I also have it set so if a female sim is abducted she will possibly get pregnant, not males.

I had a lesbian couple in one of my saves and wanted them to have a genetic baby. To make it fair I had one sim have one baby each (though one had twins lol). I found a donor sim, in my case Don Lothario was a willing sperm donor and he impregnated them. As the children never met him he never showed up in their relationships as their father. I cant remember if he did in the family tree though. But if you make your own family tree then it's not so much of a problem.