Sorry I don't know the one you're looking for (but I'm tracking coz it sounds great!), but is a rec for a daughter fic:
Live To This (http://truelyesoteric.livejournal.com/94011.html) When they first meet they’re just two screwed up people looking for something. It’s only supposed to be a one night stand, but they just can’t shake what they found in the dark. But everything between them blew up in their short time together. Years later they’re even more screwed up and they’ve stopped looking for anything. But what was once there is still there.

I'm tracking it too! I hope the someone finds it, it sounds right up my street!

That's great..!!!
And thank you for the rec :)

This sounds like Just Like This by breaa1

Jared's young, free and single – and finds when Jensen Ackles and his three devil children move in next door that he doesn't want to be. Jensen just wants to be left alone and find some peace.

Unfortunately, the author deleted her LJ account. You can find the story as a PDF here.

Hey!!!
Thanks I read this one but unfortunately its not this one..
Anyways thanks for the help :)

Hmmm. I think it might be Baby Steps (http://archiveofourown.org/works/1772821/chapters/3794662)

I'm not exactly sure though.