The rules are simple: unattached companionship, toe-curling sex and a clean break whenever it ends.Either one of us can say the single word that will break it off: Snapdragon.Falling in love is a luxury people like us don't have.He's at the top of his field and I'm at the top of mine.It's only a matter of time before duty calls and one of us walks away.But I can feel myself slipping, falling for him, every time he sends me dinner when I'm chained to my desk; every time he takes revenge on my boss for making my life hell; every tender touch in the dark of night.How will I ever walk away if he says the word?I know I ought to be the one to say it. I've already broken the rules. I know I ought to say it. But I can't.