That sounds like an awesome marriage! I think its just become more acceptable in society, in all socioeconomic classes. People are more connected and integrated than ever before. Additionally prioritization of female pleasure is becoming more normal, and us whiteboys realize we can have a loving relationship with a woman, and still have her get her brains fucked out by a bbc stud. The arrangement can work for all involved. Thats what happens when racism declines, people become more interconnected, and women prioritize their pleasure. I have 5 ex gf and one ex wife. Lost wife to bbc (I introduced her to it), and all 5 gfs are bbc only.