Josh Templeton Timeline and Summary

On Sunday, Josh's mom gives him a CD-ROM to give to Emma. It's supposed to download AOL, but instead downloads the futuristic Facebook.
On Monday, Josh finds out that in the future, he marries Sydney Mills, the hottest girl in school. Josh and Emma try to figure out if Facebook is real or a hoax, and ultimately realize it's real thanks to some film they develop.
On Tuesday, Josh takes measures to get Sydney to notice him, and then he gets mad because Emma is meddling with her future and he's concerned this could also mess up his, too.
The only thing that changes in Josh's future, though, is his kids—instead of three kids, Sydney's pregnant with their first.
In the present, Sydney asks for his number.
On Wednesday, Josh runs into Sydney in the neighborhood and she gives him a ride home.
In a thoughtless attempt to change her own future, Emma kisses Josh. Josh gets really mad about this, and on Thursday, Josh and Emma aren't speaking.
Sydney gets Josh out of class for the afternoon to help her run school errands. It's kind of a date.
On Friday, Josh and Emma still aren't speaking, but he and Sydney arrange to go to Rick's bonfire together.
Around this point, Josh realizes that Sydney might be the wrong girl for him, but he doesn't really know what to do about this so he goes to the party with her.
He ends up getting a ride home from the party with a friend, but then Tyson and Kellan drag him back out, bringing Emma, too.
Emma and Josh finally admit to liking each other.