Pamela Bauer 
Having Justin’s Baby [EPUB ebook] 

There’s no turning back once Paige makes a colossal mistake that could cost her the best friend she’s ever had. How can life possibly stay the same for her and Justin after they spend one passionate night together? If only her fiance hadn’t run off with another woman. And if only Justin hadn’t been there to comfort her when she’d been so utterly vulnerable….But now she’s pregnant and Paige can’t turn back the clock and things couldn’t get any more complicated. Because this innocent little baby puts a whole new spin on the term "just friends."