I Know It's Over by C.K. Kelly Martin

Pure. Unplanned. Perfect.
Those were Nick's summer plans before Sasha stepped into the picture. With the collateral damage from his parents' divorce stil settling and Dani (his girl of the moment) up for nearly anything, complications are the last thing he needs.
All that changes, though, when Nick runs into Sasha at the beach in July. Suddenly he's neck-deep in a relationship and surprised to find he doesn't mind in the least. But Nick's world shifts again when Sasha breaks up with him. Then weeks later, while Nick's still reeling from the breakup, she turns up at his doorstep and tells him she's pregnant, and with his emotions and hopes crashing in around him, Nick finds himself struggling once more to understand the girl who insists that it's still over.
(Summary from jacket flap)

C.K. Kelly Martin is a genius. A complete genius. I have never ever heard of a book that details teen pregnancy through a guy's point of view. And written by a female author to boot. When you think about that, this book could have been a complete disaster. But it wasn't. Not at all. I Know It's Over succeeded in being emotional, eye-opening, tragic, and new. You take your classic pretty boy, who's actually really deep and interesting on the inside, throw him into some interesting situations that change his world forever, and you've got one heck of a novel. What's really unique about this book is that in any other story, Nick would have been a boring and stereotypical character. He's got the annoying sister, the ugly divorce, and the sweet sport skills. What makes him a really great character is that the story is told through his eyes so you get to see everything that goes on under the skin. Nick is a great guy. He has feelings, he knows how to think, and even as a girl, I GOT him. For me, that's what made the story really work. It took something normal and made it into something completely not normal. The other thing that worked was that Nick and Sasha's relationship was very realistic, feelings-wise and sex-wise. You can tell that C.K. knows what it's like to be a teen. Nothing was ever glossed over, you got the gritty truth thrown at you from every page. I don't really know if there's anything bad I can say about this book. The characters were well developed, real, and believable; every single one of them. The plot moved at the perfect pace; slow enough so you could get all the details you needed, but fast enough to keep you hooked. The writing was AMAZING. There were really no flaws in I Know It's Over. The weird thing for me was that after I finished the book, I wasn't awed or in shock or anything. It's the kind of novel you need to digest for a while to milk the whole meaning out of it. And now that I've had a little time to brew on it, I AM in awe. Of the story, of the author, and of the ending. The ending was the best part by far. And I just really hope that if you haven't read this book yet that you now realize what you're missing. Please please please, go pick up a copy. 

Read my Bits 'n Pieces interview with C.K. Kelly Martin.