Angelica Swan played by Zoey Deutch

Based on Hamilton Musical Song: Satisfied 

OC x OC x Edward 

But end game is OC x OC. 

OC played by Paul Wesley

(Don't know what to name him)

- He is a werewolf.

Edward was attracted to this Swan sister first before Bella came and he switch to Bella swan. She had to deal with being in the background of Bella's and Edward's love. She was happy to find the OC that cared about her the same way as Edward Cullen cared about her sister.