Zach made one promise he was never supposed to break.
Don’t cross the line with your best friend’s sister.
Olivia had always been off-limits—not because he wanted her and couldn’t have her, but because he never thought of her that way at all. She was Dylan’s younger sister, a constant presence in his childhood. Someone he was meant to protect, not want.
Until she showed up at his university. No longer a girl, but a woman—confident, sharp, and impossible to ignore.
Zach is the star football player everyone wants, carrying a reputation he never bothered to deny. Olivia knows exactly who he is—and exactly why she shouldn’t trust him.
When a shared class forces them into close proximity, old familiarity turns into dangerous tension. Zach tries to keep his distance, torn between loyalty and desire. Olivia refuses to be just another conquest in his story.
But some lines don’t disappear quietly.
They blur.
They tempt.
And once crossed, they change everything.
As attraction deepens and restraint gives way to heat, Zach must choose between the lifelong friendship he has with his best friend and chasing the one girl he can’t get out of his head. And Olivia must decide if trusting him is worth risking her heart.
Because some promises are meant to be broken.
And some loves are worth crossing every line for.
The One Line I Crossed is a college football romance featuring:
- Best friend’s sister
- Off-limits / forbidden attraction
- Slow burn with high heat
- Protective athlete hero
- Strong, confident heroine
- On-page spice
- Guaranteed HEA
Perfect for readers who love college sports romance, intense chemistry, and stories where choosing love means breaking every rule.
