"Blue Valentine" explores the complexities of a deteriorating relationship between Dean and Cindy, showcasing the contrast between the passionate beginnings of their romance and the painful realities of their marriage. The film employs a non-linear narrative, juxtaposing joyful moments with intimate struggles, highlighting themes of love, heartbreak, and the impact of time on relationships. It emphasizes how love can evolve into disillusionment and the challenges of maintaining connection amidst personal and external pressures.

Michelle Williams was born on September 9, 1980. "Blue Valentine" was released in 2010, and filming took place mainly in 2009. At that time, Williams would have been around 29 years old during the filming of the movie. The film features her as one half of a couple navigating the complexities of their relationship over time.

In the movie "Blue Valentine," the baby belongs to the main characters, Dean and Cindy. The film follows their tumultuous relationship, showcasing both their loving moments and the struggles that ultimately lead to their separation. The baby represents the couple's early hopes and dreams, but also highlights the complexities and challenges they face as their relationship deteriorates. The narrative shifts between their past and present, emphasizing the impact of their choices on their family life.

Michelle Williams and Ryan Gosling had a positive working relationship while filming "Blue Valentine." They developed a strong bond during the intense and emotionally charged production, which contributed to their authentic performances. Both actors have spoken highly of each other in interviews, acknowledging the trust and connection they built to portray their complex characters. Their chemistry on screen was a crucial element of the film's impact, showcasing their ability to collaborate effectively despite the film's heavy themes.