Fiance Died, Can't Get Engaged to New Boyfriend.
My Sim's fiance died in a fire, his spirit was released to the Underworld/Netherworld, call it what you want, and his picture and relationship information is dimmed down and I'm unable to contact him...
It's a bug.
Here's a workaround that might help: http://sims4.crinrict.com/en/2014/09/widowed-sims-cant-remarry/
