Remember Me by Alexis Ashlie

JORDYN:
Ten years after putting myself through college working at Denning Technologies as a janitor, I come back as Head of R&D, eager to fulfil my career dreams. Imagine my shock when I discover that the kindly old owner, Donovan Denning Snr., has been replaced by his son! The man I had a terrible crush on when I worked there as a young woman, who never spared the cleaning staff a second glance . . . except for the time he took my virginity during the office Christmas party—and never looked my way again.
Now, he doesn’t recognize me. How insulting! Well, I’ve got news for the bastard: I’m taking him down.

DONOVAN:
The new Head of R&D is stunning: a gorgeous, confident, curvy woman with a brilliant mind. The only thing I can’t understand is why she seems to hate me on sight. It’s driving me crazy: we’ve never met, so why the hostility?
I decide to take her along with me on a business trip to Barbados. That will give me time to figure this out. But the seductive siren who steps onto the plane is nothing like the prim and proper executive I know.
Looks like things are about to get interesting.