1988. On the night of their graduation, Emma and Dexter meet for the first time. It's an evening of almost-romance, and a morning of missed opportunity.

1997. The two bump into each other at a university friend's wedding. After an awkward reunion, they get lost in conversation together.

1991. On holiday together in Greece, Emma has plans for how to keep things platonic. Dexter would rather reminisce about the night they met.

1992. After a heavy night out, a hungover Dexter goes home to visit his family. Shocked at the terrible state he's in, his mother takes him to task.

2000. 2001. 2002. Em and Dex's bond grows tighter as the years pass. Her writing's going well, and he starts his own business.

1990. Life in London isn't what Em was expecting. In a creative drought, she's working in a shabby restaurant, where she gets a visit from Dex.

1999. A troubled Dexter visits Emma, who's thriving in Paris. As they wander the streets, the memory of their encounter months before hangs in the air.

1989. The year has taken Dex and Em in very different directions. From a villa in Rome and a minibus in the Midlands, they both ponder what comes next.

1994. The friends go for a glamorous but disastrous dinner together. Dexter's keen to show off his lavish new lifestyle, but Emma isn't impressed.

2003. 2004. 2007. Unable to contemplate the future, Dexter looks back on his and Emma's intertwined past — and gets a visit from some familiar faces.

1993. Dex gets his moment in the spotlight, while it's opening night for Em's play. She boosts her actors' confidence, while he suffers a dent to his.

1996. Dexter wants to impress his new girlfriend's parents, but the visit doesn't go according to plan. Over dinner, he gets a call from his agent.

1998. Dexter's still adjusting to domestic life. On an evening in, he finds an old mixtape from Emma and calls her to chat about times gone by.

1995. On the last day of the school term, Emma gets into a compromising position at work. When she gets home, things become even more uncomfortable.