Responses
Let me nerd around for a secondヾ(☆▽☆)
1994 Mobile Fighter G Gundam Domon & Rain
Also I remember sailor Moon super S chibiusa and Helios which was sometime in the 90s as well. And then there's Ranma 1/2 which has been around since the 80s and there's a pink haired love interest to the black haired Ranma... That's all I can come up with on the fly but I bet there's more.
Imteresting but her hair color id brown though
Sometimes I wonder who exactly is the og Black-Pink Couple. The first one the comes to mind is SasuSaku, I wonder if there are any earlier once.