Derin

Derin (D/exter and Erin) is the friendship or romantic pairing of Dexter Lloyd and Erin Blakewood. When Cassie asked Erin who she likes Erin said Dexter. Also during the graduation party, Dexter comes up to Erin (and Cassie) and tells them, "I'm all your's ladies!". Fans think  if there is a spin off, it is possible he might date Erin  as she said she has a crush on him.

The Touchstone of Ra

 * During the graduation party, Dexter comes up to Erin (and Cassie) and tells them, "I'm all your's ladies!"
 * On the trip to the museum, Cassie asked Erin who does she have a crush on, and Erin admits that she might have a crush on Dexter.
 * Dexter pulled Erin out of the way so she won't get hit.
 * They become a member of Sibuna, along with Cassie.
 * They promised to keep the Sibuna secret safe.

​Trivia

 * If there is a spin off, it is possible he might dateErin as she said she has a crush on him.
 * They will be in Sibuna next year.