Sarah is a stay-at-home mom whose husband frequently travels for work and is dismissive of Sarah's concerns about his absences. Overwhelmed by the isolation of taking care of her toddler daughter, Jessie, she calls her best friend Mindy, whom she has not seen in years, and the two depart on an impromptu roadtrip together with Jessie. The two women discuss their different lifestyles with Sarah believing that Mindy is free-spirited and promiscuous. After a night recalling their sexual experiences in college, the two end up kissing, which leads to them being physically intimate. The day after, Mindy is hurt after Sarah seems to treat the experience nonchalantly, thinking it happened due to the spark of the moment and Mindy's promiscuity. When they stop at a convenience store, Mindy purchases a ticket back to her home in New York City and abruptly leaves.
After three years of little contact, Mindy invites Sarah to her wedding. Sarah is now separated from her husband. Sarah at first feels left out and isolated as she is disconnected from Mindy and her life. However, after Mindy invites herself to Sarah's hotel room the two begin to reconnect. At Mindy's bachelorette party the two share a kiss.
The day of Mindy's wedding the two go for a walk and discuss their roadtrip, the night that they slept together, and the three years of absence. Mindy feels sorry for leaving, and they tell one another they love each other. Nevertheless, Mindy goes forward with her wedding.
Lovesong received positive reviews from film critics. It holds an 83% approval rating on review aggregator website Rotten Tomatoes, based on 30 reviews. The site's critics consensus reads, "Wise, well-acted, and emotionally resonant, Lovesong explores emotionally resonant themes through the ups and downs of the bond between two women."[7] On Metacritic, the film has a weighted average score of 74 out of 100, based on 14 critics, indicating "generally favorable reviews".[8] According to the Guardian the movie received 3 stars out of 5.[9]