21 06 11 relationships and romantic storylines, romantic storylines, relationship archetypes, interactive fiction romance, June romance arcs.
This trope involves lovers who are not supposed to be together due to societal, familial, or other constraints. "The Notebook" by Nicholas Sparks is a classic example.
"I'm considering a theatrical exit," Elena replied, "but I'd settle for a drink that isn't 90% ice."
This is why the numbers are so specific: 21 (too young), 06 (peak chaos of early adulthood/June wedding season pressure), 11 (the last possible moment to act). The calendar becomes a cage.