While I’m not an expert in marital law in the Seven Kingdoms, it’s a safe bet that Petyr Baelish, aka Littlefinger, was. Before thrusting Sansa upon the Boltons, that the marriage was never consummated and therefore null. “By the law of the land, she’s no man’s wife.”
That said, there’s no discounting the possibility of a reunion there when the Hand accompanies his queen to Winterfell.
Season 8 of Game of Thrones premieres Sunday, April 14 at 9 p.m. on HBO.