Emma logs onto the Internet and it's happened: Facebook is gone. She must have deleted her account just like she said she would.
As she climbs into bed she thinks about her future self—the one without a Facebook. Just like her future self must have felt like Facebook was too distracting, she realizes that her present self should focus a bit more on her life, too.
She hears a car pull up into the driveway and assumes that it's Sydney's. She imagines Josh giving her a kiss goodnight and bursts into tears. Josh is going to marry her and live happily ever after and she missed out on the best thing ever.