"Well, when you try, and try, and try, and try and next to everything you do, but always fail, you would feel the same way..."
Almost there...
He hears the final part.
"I love her. I would rather let myself die then her get hurt."
Balls. So close. I'll just have to do this the hard way...
Diane looks at Rose, "I know. But still, not knowing about him... even if he learnt about it from a different source, it would still leave a gash in his heart."