This is a small mod that fixes a compatibility issue between Sexbound API and certain other mods only. I.e. Space Police and Killable NPCs mods.
By default, the Villager type NPCs are supposed to be sex-enabled, but if they're not then you might benefit from downloading and installing this mod. It's set to load at a priority of '9999', so it should be one of the last mods to load in your mod list.