: Tensions between the "twisted sisters" reach a boiling point. Cristina betrays Meredith by using Meredith's 3D printer for her own research on a terminal baby, despite Meredith’s clear refusal.
: Shane Ross sides with Cristina against Meredith to use the 3D printer. [S10E8] Two Against One
: The couple makes a "bold decision" regarding their relationship, specifically choosing to wait until marriage for sex. : Tensions between the "twisted sisters" reach a
: Meredith feels isolated as her best friend and her research goals are pitted against her. : The couple makes a "bold decision" regarding
: Fans remain divided over the betrayal. Many on Reddit felt Meredith was being overly possessive of her project, while others argued Cristina was out of line for going behind her friend's back. "Grey's Anatomy" Two Against One (TV Episode 2013) - IMDb
: Callie and Arizona are forced to navigate the presence of Owen’s new serious partner.