I’m thinking back in history on racism and its existence in general. I’m not fully versed of what their “affair” entailed, but I’m wondering how them being such different races was viewed by the general citizens. Was it widely accepted? Did they care about race and the status of different races?
Adding on to the answers /u/FlavivsAetivs linked, you may find these older answers to be helpful:
How would an Egyptian in Alexandria at the turn of the millennium have perceived race and skin tone?
Was Cleopatra actually Egyptian? (which has some very probing insights by /u/khosikulu