The process of marriage in Stardew Valley 1.6 is still almost the same as with the game's previous versions, but with some extra nuances.
Sometimes, the Beast won’t spawn in its lair; it will just be an empty room. If this happens to you, head back out of the ruins and head up the hill that the lair is in. You will find an enemy camp here, and the Beast will have spawned outside of it, stuck in the terrain....