Sometimes a series has a couple involved in a Will They or Won't They?
plot arc, but the couple are no closer to being in a relationship in season seven or book twelve than they were in the beginning.
This can happen because other story elements take precedence and the relationship is lost in the shuffle
or suffers Exponential Plot Delay
because maintaining the status quo
helps prolong the series. Basically there's a sense that if they haven't found a time or a place or a reason to get together yet, any Unresolved Sexual Tension
between either was overrated
in the first place, or has faded into oblivion.
If They Don't
this may become Maybe Ever After
or No Romantic Resolution
If They Do
it's likely to be a Last Minute Hookup
- Ranma and Akane have been in a non-relationship with hints at UST
for so long you feel that neither character is particularly attracted to the other