Overview
The original "Jas Marriage Mod" from 2016 was officially removed from many mainstream hubs. Some old threads on the Steam Community stardew valley jas marriage mod link
There is also a "Yandere Jas" bachelorette mod that is frequently discussed in community forums as a "creepy" or "weird" alternative, though links to it are often restricted. Chucklefish Forums Wholesome Alternatives Overview The original "Jas Marriage Mod" from 2016