We Can Be Mended (Divergent fanfic)

Divergent fanfic, set 6 years after Allegiant. Tobias is still learning to cope with his grief, believing that Tris is the only one that could heal him, but all hope is not lost. When the girl that haunts every nightmare turns up on his doorstep, Tobias learns that we can all be mended.
(lots of Fourtris fluff)