We've all seen (or done or at the very least heard about) the ALS Ice Bucket Challenge. Everyone from Anna Wintour to Lena Dunham, Gwyneth Paltrow (pictured) and David Beckham have done it.

Gwyneth Paltrow/Instagram

For many of us it will be a passing fad, but at least one American couple will remember it forever…

ENGAGEMENT SELFIE RULES

Shelby was preparing to chuck freezing cold water over herself in aid of charity when her boyfriend Justin snuck in behind her, got down on one knee and waited for his very confused girlfriend to turn around before proposing!

They had shared their very sweet video on YouTube but later removed the link.  

If the idea of a surprise proposal like this doesn't pluck your heartstings then you are as cold as the water in the bucket. At the very least, you have to admit it's a novel way of popping the question…   

CALLING ALL ROMANTICS! WE WANT TO HEAR YOUR STORY