A Million Worlds with You by Claudia Gray

Genre:  YA Sci-Fi Romance

Firebird Series, Book 3

Claudia Gray's website

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Note:  This is the third book in a series.  You have officially been warned.

Description (taken from Claudia Gray's website):

A million universes. A million dangers. One destiny.

The fate of the multiverse rests in Marguerite Caine’s hands. Marguerite has been at the center of a cross-dimensional feud since she first traveled to another universe using her parents’ invention, the Firebird. Only now has she learned the true plans of the evil Triad Corporation—and that those plans could spell doom for dozens or hundreds of universes, each facing total annihilation.

Paul Markov has always been at Marguerite’s side, but Triad’s last attack has left him a changed man—angry and shadowed by tragedy. He struggles to overcome the damage done to him, but despite Marguerite’s efforts to help, Paul may never be the same again.

So it’s up to Marguerite alone to stop the destruction of the multiverse. Billions of lives are at stake. The risks have never been higher. And Triad has unleashed its ultimate weapon: another dimension’s Marguerite—wicked, psychologically twisted, and always one step ahead.

In the epic conclusion to Claudia Gray’s Firebird trilogy, fate and family will be questioned, loves will be won and lost, and the multiverse will be forever changed. It’s a battle of the Marguerites . . . and only one can win.

I love the whole concept of having alternate realities with the same people but different circumstances.  And it's how we react to these circumstances that ultimately shape who we are.  Just as the main Marguerite in this book is good, there's also an evil Marguerite that is willing to destroy the multiverse.  It kind of points out that there is good and bad in each of us.

Anyways, Marguerite is ready to stop the Triad's plan of destroying universes in order to save somone dear to their hearts.  But what she doesn't realize is that their biggest weapon also happens to be an alternate copy of herself.  So how does she fight herself or make her see reason?  And manage to keep Paul by her side?  The man that once made her believe in true love and destiny only to watch it all crumple up in her face in one of the different realities.  Can she stop herself and this other world from annihilating all of the other worlds?

The concept is cool.  And the whole premise of trying to determine true love across universes is awesome.  Or well complicated...  But this has turned out to be one of my favorite series.  Seeing all of the different worlds and experiencing old ones.  It's as if you could see your life from a different outcome.  A series well-loved and worth it in my opinion.

If you're into the whole multi-universe thing, give this one a try.  If it peaks your interest, then pick it up...