Tammy Wynette knew what she was talkin' about

Do you know how many "somebody done somebody wrong songs" there are out there.
Since The Man left I can't listen to Country Music - which isn't such a bad thing, I can hear somebody saying.
I know it's comforting to know you're not the only one who feels like your heart is ripped out, but how's Tammy Wynette for summing up the whole damn thing in four chords?

Tammy Wynette - D. I. V. O. R. C. E.

Our little boy is four years old and quite a little man.
So we spell out the words we don't want him to understand.
Like T-O-Y or maybe S-U-R-P-R-I-S-E.
But the words we're hiding from him now,
Tear the heart right out of me.
Our D-I-V-O-R-C-E; becomes final today.
Me and little J-O-E will be goin' away.
I love you both and it will be pure H-E-double L for me.
Oh, I wish that we could stop this D-I-V-O-R-C-E.
Watch him smile, he thinks it Christmas.
Or his 5th birthday.
And he thinks C-U-S-T-O-D-Y spells fun or play.
I spell out all the hurtin' words
And turn my head when I speak.
'Cause I can't spell away this hurt,
That's drippin' down my cheek.

My kids keep telling me things like "you're not fighting anymore Mummy, when are you and Daddy going to live in the same house again" - or "don't worry Mummy, Daddy loves you, he'll come back" - or worse, "when will we do things again as a whole family?"
And I have to be cruel - because it would be worse for them to think something was going to change - I have to say "Daddy and I won't live together, he's never coming back to live with us but he'll never give up on you, and no, Daddy doesn't love me anymore and we're going to be a different kind of family".
And all the time, I'm a hypocrite, because I'm wishing it could be that way.

Now I have to plan Christmas around three little kids, not just The Boy and The Girl, but The Big Girl as well - and I have to be calm, and kind and grown-up when really I want to be the one sitting under the blankets crying because Daddy won't be there to read stories tonight.

How do people get through this and come out OK?
How am I going to?
When is there going to be time for me to sit under the blankets and cry?