La La Land

In the official teaser trailer for La La Land, we find Mia (Emma Stone) walking into a party. We see her with Sebastian (Ryan Gosling), working on a musical set. They're obviously falling in love — gazing into each other's eyes, Mia watching Sebastian's piano performance, and them kissing. The happy music and overall vibe is dampened, however, as we see Mia in the audience crying as she's watching Sebastian play, and she is later shown running away. A break-up is hinted at, but then Mia and Sebastian are flying up into the sky and dancing in the galaxy. It seemed like they'll be okay as they share another kiss at the end.