Carrie Underwood has practically made a career out of her rockin' break-up-and-get-even country anthems, including her most recent rile-you-up number "Renegade Runaway," but her latest tune is taking us straight to Tearjerktown, and there are zero stops along the way to Sob Street.

The fourth track from her new Storyteller album, the tongue-tyingly titled "What I Never Knew I Always Wanted," is most definitely a sweet little love letter to the two special fellas in her life -- hubby Mike Fisher and her infant son Isaiah -- with all the accompanying wedding and baby-related feels on lock.

The first verse is all-in with the gooey lurve stuff.

Consider the oh-so-happy-sappy lyrics:

Never was the kind to think about dressing in white

Wasn't waiting on a prince to come riding into my life

Thought I was happy on my own

'Til you came and proved me wrong

Carrie and Mike, an NHL player for the Nashville Predators, got hitched on July 10, 2010, so they're not even close to newlyweds anymore, but clearly the honeymoon is not over for these lovebirds. Awwww.

Then we get to part two which is all about bb Fisher.

The new mom -- whose little Isaiah Michael was born on Feb. 27 of this year -- promised us a few mommy-and-me jams on her new album, and here she delivers one tug right to the heartstring.

The lyrics for little Isaiah's tribute portion are:

Never pictured myself singing lullabies

Sitting in a rocking chair in the middle of the night

In the quiet, in the dark

You're stealing every bit of my heart with your daddy's eyes

What a sweet surprise

Storyteller, Carrie's fifth album, hits shelves on Friday, Oct. 23.