You should try to prepare them for your decision instead of just 'springing' it 'on' them suddenly.
The rope stretches and 'springs' back into shape. [=returns to its original shape]
New housing developments are 'springing up' all over the state.
(..) - Do you doubt that? I see Prince Hamlet makes a show of love. Beware, Ophelia, do not trust his vows Hold it but a fashion and a toy in blood, a violet in the spring of primy nature Fleeting, not permanent, sweet, not lasting, the suppliance of the moment, no more - No more but so? (..)2015 Hamlet