Forbidden Merger by Emilie Rose (SD 1753)

Their parents own rivaling companies.  They meet and are attracted before they realize who the other person is.  They leap into sex, trying to put rules on it, but a leak happens at work.  He realizes he's in love, she fights it.  Great story, great conflict, awesome intense sex. 

Rating: 4/5 stars, a good story, they really grew to care about each other and were honest in their relationship.