This seems to be a decently requested mod that no-one has put up yet, so I decided to throw a quick one together. Install: Make sure you have SMAPI 0.37 from https://github.com/ClxS/SMAPI/releases/tag/0.37 Extract the DLL from the archive and place it in the /Mods/ folder in the main game directory. Usage: The mod automatically adjusts friendship values, depending on if you've talked to the NPC or not, there's no settings or anything you have to change besides placing the mod the in the /Mods/ folder. Links: 1.0 : https://www.dropbox.com/s/dteituy6oikveq4/NoFriendshipDecay.zip?dl=0 1.1 : https://www.dropbox.com/s/06tzj8y09famuv2/NoFriendshipDecay_1.1.zip?dl=0 Notes: The game currently decays friendship by a value of 2 everday, if you haven't talked to the NPC. SMAPI currently fires the DayOfMonthChanged event on load, so everyones friendship is increased by 2 each time you load a save file as well. Also, if you create a new game with the mod loaded, before you've met all the NPC's, their friendship level will increase by the default of 2 too. There's not much I can do about the former and the latter, since the friendship dictionary that stores these values has all the NPCs already in it whether you've met them or not. Edit: 1.1 should possibly fix the issue with increasing the value when the game loads as well. FINAL EDIT: Wanted to clarify why there are still two different versions in the OP. Version 1.0 gives you a net gain of friendship without you actually influencing the relationships of other NPCs naturally. 2 is gained the moment you load into a saved game (because of how SMAPI is designed, not much I can do about that bit) and 2 is gained automatically per day (to remove the natural decay of 2 if you haven't talked to them). If you have talked to them you will always get a net gain of 2 per day that the game wouldn't normally give you with Version 1.0 Version 1.1 prevents you from experiencing first days dialogue with an NPC, but does not give the erroneous 2 on game load, and 2 extra if you have talked to them.