Grant’s girlfriend is a light skin Catholic mother of two who is not get divorced. How do these differences create tension in the relationship?

The color of Vivian's skin creates tensions because of their biracial relationship, which is not accepted during this time period. The fact that Vivian is still married means that her relationship with Grant could cause her to lose custody of her children. The couple's religious leaning cause tension because Vivian is a practicing Catholic and Grant is an atheist... without faith.