Current status
0.4.5 · fixedUpdate 0.4.5 lists a fix ensuring suitable courting candidates are available. This is separate from the unresolved remarriage-after-death problem.
What to check in your save
Confirm your build and distinguish an empty candidate pool from an existing marriage state. Save a reproducible example if the candidate list is still empty on the updated build.
Version boundaries
The patch lists the issue as fixed. A similar symptom on a newer build needs a fresh reproduction instead of a claim that the old defect is still universally active.
Record the installed build, selected character or building, city and action. Preserve a save before trying a destructive workaround. Prepare a useful bug report ↗