Regina and Robin are 100% soulmates, even with Marian back. Tink told and showed Regina that Robin was her soulmate BEFORE she went full-blown evil, meaning that Marian would have definitely been alive in that time…meaning that they were meant to be together even before Robin and Marian ever met (or maybe they had met, but still….)
Outlaw Queen peeps….do not loose hope. They are meant to be together!!!