Poor choice, Ymir - you just lost out on a great person because of your jealousy; also while trying to manipulate her for your sole benefit.
Christa wins this one, even though she may think she's "lost."
!SPOILER ALERT! What do you mean by that? In case of this pic, or the latest manga, Ymir didn't want to lose Krista. It was probably the hardest decision for her to make...losing Krista - the only person who likes her is like losing the meaning of life for Ymir. Because she only cared for herself before meeting Krista. Even thought their relationship hadn't reached some conclusion yet, they obviously have feelings for each other. Ymir was really hesitating, she didn't know what was the best to do... sorry for bad grammar...
Poor choice, Ymir - you just lost out on a great person because of your jealousy; also while trying to manipulate her for your sole benefit.
Christa wins this one, even though she may think she's "lost."
That really makes no sense. Ymir didnt left because of jealousy, she left because she believed Christa would be safer with the group, inside the walls. If you read the manga, Ymir didnt think Christa was safe, even the protection from the walls was no guarantee until she saw what Eren could do. I suspect Ymir had to leave to fulfill her obligation or some sort of plan to make sure Christa can be safe from those who are seeking her. Re-read ch 50.