Sasha x potato. lol
I love how people can guess your favorite pairings only by your signs, guys.

Favorite ones:
I really love Jean x Marco... /sobs
Ymir x Christa is also very cute (ok, I must say I just love both of them, I ship both x me)
I'm also up to Eren x Levi and Erwin x Levi... Depends on how I want to see Levi in the dj, a sadist with Eren or a tsundere with Erwin.