I would have fun with this as a developer...
-aggressive dark red and/or pure black rabbits named "Angst"
-candy wrappers
-shirts engraved with "I'm with Stupid" and "Valentine's is a Gold Sink"
-a book of poetry about unrequited love
-a new gear for Dawn's Music Box, something melancholy
-"a tear-stained journal"... a book you can't open
-"a box of memories"... a locked wooden box that you can't lockpick
-an NPC who sends you to find "the one who got away", but in the end you have to deliver the news to him that she has moved on, and he gives you some trinket like a locket (a necklace that has -1000 luck... no, of course you shouldn't wear it, it'd just be funny)
Ok, so I think I've depressed myself enough for the night. Everyone take care!