Fan Casting Mayfly December Romance in Sort by Tropes

Large disparities in lifespans between characters can be problematic, especially if their relationship goes into the romantic field. This plays on the very mundane fact a character will probably be long dead before another is, and the emotional issues it raises. How much this is alluded to is usually related to how concise the story which addresses it is. The most obvious way to address the issue is to even out the age-bracket on either end. In older fiction, characters may be granted immortality, but recently the reverse, making the immortal mortal, is more common.