Miranda Lee - The Magnate's Mistress

Summary:

Tara and Max had been together for a year. She lived for the hours they shared every time Max jetted in to wine and dine her, and take her to bed. But it was beginning to sink in that maybe Max wasn't planning to settle down with a wife and kids. . . . Tara loved Max for himself, not for the gifts, or the glamorous life he showed her. But now she was pregnant. The question was: should she stay, or should she go? Because surely there was no place for a pregnant mistress in his life?

The Boss's Baby by Miranda Lee

Summary:
From Secretary---to mistress!

When her fiance ditched her, Olivia's world was blown away---and with it, her natural caution. She went to the office party...and ended up making love with her handsome boss!

Not that Lewis protested. Soon he and Olivia had more than just a working relationship---top of their agenda was an affair!

But Olivia had a secret: their first reckless encounter had led to something unexpected---she was having his baby!