context: The story is based loosely on real events and real people, drawing on David N. Thomas' book Dylan Thomas: A Farm, Two Mansions and a Bungalow.
  During the London blitz of World War II, nightclub singer Vera Phillips (Keira Knightley) runs into her first love, the charismatic Welsh poet Dylan Thomas (Matthew Rhys). Their feelings for each other are rekindled, despite the fact that Dylan is now married to and has a child with the spirited Caitlin Macnamara (Sienna Miller). In spite of their initial rivalry, the two women become best friends and, drinking heavily in wartime London, the three get along well.
  At this time, William Killick (Cillian Murphy), a British Army officer smitten with Vera, pursues her; both Vera and Caitlin are intrigued by his steadfast, gallant personality, although it contrasts with Vera's rebelliousness. William notices her closeness with Dylan, but doesn't seem particularly concerned by it; he and Vera even lend the struggling poet some of their savings. He and Vera fall in love and marry, but soon afterwards William is called up to join the fight against the German invasion of Greece.
  Vera discovers shortly after he leaves that she is pregnant; she's upset that motherhood will lose her independence, but cannot bring herself to abort William's child. She later gives birth to their son, and she and the Thomases move to the Welsh seashore to raise their children in two small neighbouring cottages, where Vera and Caitlin's friendship grows ever closer. One day, however, Dylan draws Vera into an affair. Dylan and Caitlin's marriage has long been distorted by their multiple infidelities, but Dylan- recalling a sexual encounter he and Vera had when she was 15 years old - sees her as his soulmate.
  William (now a Captain), scarred by the horrors of the war, eventually returns home where Vera notices his emotional distance and instability. In his disquiet, William comes to suspect his wife's infidelity and confronts her about it; Vera also confesses the truth to Caitlin, who is furious with her for lying to her. Severely drunk one evening, and angry with Dylan's friends and their ignorant remarks on the war, William wanders out at night and fires multiple shots into the Thomases' house, though he hits no one; Vera manages to talk him down, and the next morning he seems to return to his former self. However, he is soon arrested and taken to trial.
  During the trial, Dylan testifies against William by exaggerating the facts, stating he believed William was not only sober, but also that William intended to kill him, his wife, and his child. The jury finds William innocent of intent to murder, and he returns home. He accepts his new role as a father, and he and Vera forgive each other, rekindling their relationship. Soon afterwards, the Thomases move out of their cottage. During the farewell, Vera restores her friendship with Caitlin, but never speaks with Dylan again, unable to forgive him for testifying against her husband.
question: Who is Dylan to Vera?
answer: Dylan is Vera's first love when they where 15 years old.