Peter and Nina

The relationship between werewolf Peter Hale and human/doppleganger Nina McCall.

Timeline
First Relationship
 * Start Up: Under Your Spell (6x09)
 * Break Up: Chronicle of a Fallen Love (6x12)
 * Reason: Derek Hale caught them together and Peter believed that he was bad for Nina.

Second Relationship

 * Start Up: 6x13
 * Break Up: Between Hold On (6x22) and Siren Song (7x01)
 * Reason: Since Peter had to leave for the Armory, he didn't want her to wait for him. They still promised that they would continue care about each other.
 * Their break-up was shown in a flashback in Tuck the Darkness In (7x02)

Trivia

 * Nina used to dislike Peter.
 * Peter was born 18 years before Nina.
 * Nina was 20 and Peter was 38 when they started dating.
 * Nina is good friends with Peter's daughter Malia Tate.
 * Nina previously dated Peter's nephew Derek Hale, and ended up marrying Derek years after they broke up.
 * Peter is the father figure of Nina's daughter Violet