I love you so much.

“I Love you works better, so that she can't say "how much" If you say this, be prepared to support it.”

“if she says how much say to the moon and back”

“this is better than just "i love you" because its saying a lot”

“Only say what you mean, and mean what you say...”

“Classy and sweet. Just what a gal wants to hear.”

“Classic”