i have a confession for you
It means someone is about to tell you they like you and they’re probably going to blush or stammer
My crush said, 'I have a confession for you,' and he turned red and stammered the whole thing.
My friend said, 'I have a confession for you,' and she blushed and said it like it was a secret.
My teacher said, 'I have a confession for you,' and she looked away and said it like she was ashamed.