@bubonickitten Yeah, I have a friend who ran into this when her main (m/m) couple ran into the "partnered Sims turn into brothers" bug. She tried to use MCCC to delete all relationships and then rebuild them... but couldn't have two male parents. (I suggested giving one a temporary sex change to get around it, but that was long after the fact.)
I also play a lot of same-sex couples and find this stinky. (Sorry, team! I appreciate that you're trying your best!)
[Edited to add: There's a bug report on this subject here where you can click "me, too" https://answers.ea.com/t5/Bug-Reports/Can-t-set-two-mothers-fathers-as-parents-in-CAS/m-p/10452839#M187313 ]
