When Lauren and Candace are drinking wine and contemplating their relationships with Michael and Dominic, Lauren says Michael is a mama's boy and wants to break up. Lauren tells her there's no such thing as the perfect man and references the book. She says, "Isn't that what you've been preaching to me all night?" but her mouth doesn't move.
When Kristen is talking about her relationship at the open house she compares herself to the character Frodo Baggins. When asked to explain who Frodo was she says "from The Hobbit". Frodo appeared in the original Lord of the Rings trilogy, not in the prequel story The Hobbit which focuses on the character Bilbo.
When Michael (Terrence Jenkins) goes to kiss Candace (Regina Hall) after their date, Candace has shoulder-length hair, but when the camera angle changes, Candace's hair is shorter and up to her neck, then back to long again.
When Mya is with her friend in the coffee shop, the scene starts with a closeup to her hand holding her cellphone. However this hand, with clear nails, is not her hand as revealed in the immediate shot after, with purple nails.