As the man I loved approached my office, the image of a deer being hit by a truck came to mind. I was the deer, metaphorically speaking, and Mark Rousseau was the pickup truck of doom.

But here's the thing. The deer always freezes, as we all know, hence the expression like a deer caught in the headlights. The deer and I (Callie Grey, age thirty as of 9:34 this very morning) are well aware that the pickup truck is going to hit us. But we just stand there, waiting for the inevitable, whether it's a pickup truck (in the deer's case) or a man walking athletically toward me (in mine), perpetual smile in place, his brown hair carelessly curling, those gorgeous, dancing dark eyes. I waited, doe-eyed. It was all really too bad, because outside of Mark's influence, I was not at all a deer about to be run down. I was much more of an adorable, perky hedgehog or something.

"Hey." Mark grinned.

Bam! We have impact. The sunlight streamed through the windows of the old brick office building in which Mark and I worked, illuminating him so that he looked like something painted by Michelangelo. To make him even more appealing, he was wearing an old sweater vest his mom knitted for him years ago, shapeless and faded but something he just couldn't part with. A good son and a sex god.

It was as if there were two Callies... the smarter, more sensible self (I pictured her as Michelle Obama), and the dopey, in love part...Betty Boop. Would that Michelle could give Betty Boop a brisk slap, followed by some vigorous shaking. Alas, Betty just sat there, enthralled, as the First Lady snorted in disgust.

"Hi," I said, feeling my face warm. You'd think that four years of seeing him almost daily would have built up some tolerance in me, but no. My chest prickled with longing and love, my throat turned Saharan, my feet and fingers tingled. Though I was trying hard for Intelligent Coworker, my expression was probably somewhere around Pathetic Adoration.

Mark leaned against my desk, which meant his crotch was, oh, let's see, about a foot and a half from my face, since I was seated. Not that I noticed, of course. "Happy birthday," he said, making it sound like the most intimate, most suggestive phrase in the world.

Face: nuclear. Heart: racing. Callie: half inch from orgasm. "Thanks."

"I got you a present, of course," he murmured in that voice... God, that voice. Low and soft and velvety... the same voice he used in the bedroom, as I well knew. Yes, Mark and I had been together. For five weeks. Five wonderful weeks. Almost five and a half, if you really analyzed it. Which I had.

From his back pocket, he withdrew a small, rectangular package. My heart flopped as my brain raced with contradictory thoughts. Jewelry? Betty squealed. That means something. That's romantic. So romantic! Oh!

My! God! On the other hand, Michelle advised caution. Calm down, Callie. Let's just see how this plays out.

"Oh, Mark! Thank you! You didn't have to," I said, my voice breathy.

On the other side of the glass-bricked wall that separated our offices, Fleur Eames slammed a drawer. The wall only went up ten feet; the ceilings were twelve, perfect for eavesdropping, and I guessed she was trying to snap me out of my daze. Fleur, a copywriter here at the firm, knew about my crush. Everyone did.

Clearing my throat, I reached...