I think I would take them into CAS and check their preference for dating male or females. That and the type of sim qualities they like in other sims. If they match up it should make them happy to date.
Thank you! I followed your suggestion and verified everything was good. They were able to get married and perform other romance interactions, just not woohoo or try for baby. So I used my imagination that one was involved in a car accident, impairing the ability to woohoo but can bond and be intimate in other ways. The “ask for a science baby” option was a great workaround for them to have a child with their DNA.
