Jules is the love interest of Seth in the teen comedy Superbad. She was played by Emma Stone.
Jules is first introduced as paired up with Seth during home economics. They chat and find out that they have good chemistry. Jules then invites Seth to her party and Seth offers to buy alcohol, but only because he believes Jules will get drunk and sleep with him.
At the party, Jules and Seth bond some more, but Jules doesn't drink and ultimately rebuffs Seth when he brings up the idea of sex. Seth breaks down, believing that Jules would never like him if she was sober. Jules tries to reassure Seth, but he passes out and headbutts her.
The next day, Seth runs into Jules at the mall and manages to patch things up. It's implied that she'll give him one more chance.