A wrong response would ruin things, so she'd avoided it by lying to him.
She managed to ruin things for him no matter what we did to try to help.
"But if we raise the windows, the rain will get in and ruin things."
I am feeling very positive these days, like not even my sister can ruin things now.
You'd be surprised at how easily I can ruin things.
The others admit that they did not want him to ruin things like he always does.
He is certain that Cyrus will only ruin things again.
I'm way too suspicious to say yes and ruin things.
I thought you were trying to ruin things - you know.
"I should have figured he'd find a way to ruin things."