It all started with a wedding

Jay's sister is marrying, and Jay already told her she was going with her girlfriend. Unfortunately, a few weeks before the wedding, she founds herself at a crossroad. She just broke up with her girlfriend, and she doesn't want to go alone to her little sister's wedding. In a moment of desperation, Jay's best friend suggests to her a company where she can hire someone to act like her girlfriend at the wedding. Can Jay fool her family on the most important day of her sister? What will happen between Jay and her new "girlfriend"?