Her Best Friend's Wedding (Harlequin Superromance)

When did Sadie Beecham get those curves? She'd always been the geek next door, his baby sister Meg's brainy best friend. Smart, sure. But hot? He never would have imagined it…before. Now, Trey Kincaid's imagining all sorts of things. And none of them has to do with Sadie's gifted mind.

A mind, he discovers, she's clearly lost. Because she thinks she's in love with Meg's fiancé. And that's an obsession he's determined to put an end to—one way or the other.