Too early for earplugs

Overheard in Watertown* last evening, from a house across the driveway:

Young woman to her boyfriend/father of her child: You say you're 95% sure that you want to stay and marry me. So, am I supposed to just sit around waiting until you're at 100%?

Muffled male response.

Woman: If I told my parents this, that you're 95% sure, they'd tell me to dump you right now.

Muffled male response.

*Phrase borrowed from this.