Something Borrowed plot
"It's a thin line between love and friendship."
As she approaches her thirtieth birthday, Rachel (Ginnifer Goodwin) feels like her life hasn't turned out the way she'd hoped. Despite a good job as a lawyer and fun friends, including extravagant best friend Darcy (Kate Hudson), Rachel increasingly realizes after a night out that she is going home alone again. However, this changes after the birthday party that Darcy organizes for her: Rachel ends up in bed with Dex, a former classmate and ... Darcy's current fiancé. Startled, they wonder how this could have happened and they try to forget the incident. But soon both of them start to doubt: was it actually a mistake?