In the quote that CBR has
all Didio said is that members of the Bat-family
aren't allowed to get married. He never mentioned the rest of the DCU..... in the quote at least.
Which doesn't explain the Aquaman/Mera issue ..... Or Clark/Lois..... or Ollie/Dinah......
This makes sense regarding the Bat family, and I would agree with it. It makes better stories having your Bat characters lead difficult personal lives.
Ollie and Dinah just haven't met yet, but I believe that they will.
But what happened with Arthur and Meara?