All of the interpretations here are either wrong or lack clarity.
The chorus is the guys lying to themselves, telling themselves the girl is just a sunflower.
But she's a special kind of sunflower.
Sunflowers, while common (the verses contradict the idea that she's common), are also resilient.
Also, they're calling each of their girls a "sunflower" trying to get the girls to leave them, but by this time "sunflower" has a new meaning, something common has become something much more:
"I think your love would be too much"
"Fightin' for my trust and you won't back down
Even if we gotta risk it all right now"
All of the interpretations here are either wrong or lack clarity.
The chorus is the guys lying to themselves, telling themselves the girl is just a sunflower.
But she's a special kind of sunflower.
Sunflowers, while common (the verses contradict the idea that she's common), are also resilient.
Also, they're calling each of their girls a "sunflower" trying to get the girls to leave them, but by this time "sunflower" has a new meaning, something common has become something much more:
"I think your love would be too much"
"Fightin' for my trust and you won't back down Even if we gotta risk it all right now"