Sin and Amethyst: My Baby Daddy's Homeboy

Amethyst and her high school sweetheart Nasir broke up ages ago but she's still tied to him because of their six-year-old son. She has a banging body, a great job, and a great father for her child but that's about it. Her love life sucked until one drunken night with her baby daddy's homeboy, Sincere, became the best night of her life.
Sincere lives his life carefree until he finds himself falling for his long time friend, Amethyst, who just so happens to be the mother of his homeboy's child.
Although Nasir moved on to marry Taya, there is still a spot in his heart for his first true love. He was young and dumb when he broke Amethyst's heart and it was something that he lived to regret everyday because no other woman, not even his wife, made him feel the way that Amethyst had.
Taya feels like she's won the title because she made it down the aisle with Nasir, however, her jealous ways begin to cause friction in their marriage.
Will Amethyst's secret damage the great co-parenting relationship she has with Nasir? Will Sincere and Nasir end a friendship of over ten years? Will Taya let her jealous and insecure ways go? Will Nasir leave his wife for his baby mama?