Chris Kyle is a former Navy SEAL who holds the U.

S military's all time record for confirmed sniper kills 150.

He's an elite warrior, just like his fellow Navy Seals, who rescued American aid worker Jessica Buchanan from Somali pirates and stage the daring raid that took out Osama bin Laden.

Now we're learning about the personal sacrifice an American hero like Chris Kyle must make.

It's my duty to serve my country.

And so I always put my country before my family.

And that definitely caused tension.

His autobiography, American Sniper, is Number one on The New York Times best seller list.

It's a gripping account of how the stress of war put his own marriage in the Cross airs My Heart Couldn't Take It anymore, and Our Life it was falling apart.

His wife, Taos, says she was proud of her husband but always lived in constant fear for his life.

Chris was a battlefield legend.

He dreamed of becoming a sniper ever since he was a little boy and was awarded two Silver stars and five bronze stars, all with valor.

But back home, Teya had reached her breaking point.

I do remember sitting down at the table with him is at our kitchen table and feeling terrified, telling him that I couldn't do it anymore.

Chris finally realized his wife needed a husband and their kids needed a dad, so he retired from the Navy Seals.

We had fought back and we love each other a lot or we never would have made it.

And I think we're very strong together and very good together.

The widow of American sniper Chris Kyle is opening up about life after the death of her hero husband.

Teya has written a new memoir, American Wife, to Think You'll Date Again.

I just don't know how that works because I have a lot of loyalty and love for Chris, and you know, I'm aware that I'm only four years old, but I still feel very married to him.

It still feel very much in love with him.

Chris Kyle Story was turned into the hugely popular film American Sniper, starring Bradley Cooper.

Do you keep in touch with any of the cast?

I dio Yeah, I dio you know what?