When one spouse isn’t enough for you in Skyrim, let this mod help out. You have marry up to 11 spouses through Aspect of Love within the Temple of Mara in Riften. It also fixes some bugs with the wedding ceremony, spouses have an outfit system and several other features.
There is a patch for HearthFires users:
We will caution that when we use the marriage mod (not the patch) in our games and before going into Nightcaller Temple we saved the game. Then the mod was removed load order for Erandur to get past the opening in the first room. After it was opened we would save, add the mod back in and proceed on.