His mistress, his terms

Rule #1--Never mix business with pleasure...Rich, gorgeous playboy Alex Fitzgerald initially hires Merrow O'Connell for her interior-design skills. But soon Alex is determined to break his number-one rule and have the Irish beauty in his bed. She's perfect mistress material!
Merrow can't argue with the boss. But she's learned not to let anyone get close, and has vowed to stay unattached. So what will she do when the billionaire playboy suddenly wants her to be more than just his mistress?