and teach this heart (how to beat with light)

Eight years ago, at a funeral with a baby's cries ringing in his ears, Tony Stark decided to turn his life around. He's a genius, billionaire, philanthropist. What's so hard to adding 'doctor' to that list?And after that, it can't be that hard to add 'husband' and 'father' too, right?But the past has a way of haunting even the very best of us, and in any universe, Tony Stark and Steve Rogers have never had an easy love.Featuring: drama, chaos, Peter's scheming, meddling friends, and doctors learning again that the heart can never be as simple as four chambers and four valves.

I read marvelleous' work five years ago, and it was the first fic to make me cry. It's extremely well written and full of heart. If you read it or have read it, there's some major spoilers but this story diverges in several ways.I should be updating this story twice a week, it's halfway written and it's been very therapeutic writing it. Comments and constructive criticism are very welcome :)Enjoy!