stardew-valley – How to Have Level 13 Out of 12 Friendship with Your Wife in Stardew Valley

stardew-valley

While talking with my wife recently, the friendship level pop-up in the dialogue box shows we have level "13/12":
13/12 friendship
This seems peculiar, since only 12 hearts out of a maximum of 12 show in the social tab:
12 hearts in social tab
Furthermore, on the wiki (here and here), the maximum friendship level is stated to be 12 for a spouse. From the second link (emphasis mine):

Once a villager has been married, they will move into the farmhouse. They will have a maximum of 12 hearts instead of 10 […]

How is this possible that the friendship level is above 12, which appears to be the maximum?

Best Answer

This is in fact intended.

As DanmakuGrazer said, by increasing your relationship with your spouse, it will eventually reach 13 hearts. When this happens, the relationship becomes "capped" like every other relationship: it won't naturally decay. (It can still decrease due to actions such as the character witnessing you digging through trash, or if you give gifts to bachelor/ettes while married.)

Getting your spouse's relationship to 13 is a requirement for

getting a stardrop. More accurately, once your spouse is at 13.5/12 hearts, you'll receive the stardrop. (H/T @Pathoschild.)

In fact, in the past, instead of being represented as 13/12, this would be shown

as a stardrop icon.