Rosalie would say that though she no longer needs to breathe, you always made her feel as if she could once again. The love that you convey makes her dead heart hammer within her chest almost on the precipice of bursting out of it. There is a special sort of humanity that she retains and that could only, ever, be because of you.
Even if you do annoy her sometimes.
Annoy her to the point of wanting to take that pretty head off of your equally pretty shoulders whenever your lips part and that god awful pet name plunges off of your tongue. 'Rosa', 'Lee', 'Honey, 'Love'; these are just a few that she could list from the top of her head. They are nowhere near the literal myriad of things you have said to her over the many decades of knowing each other.
It's a pity that vampires live so long, really. An even bigger pity that you're her mate, but she'd never let you go.
"Enough," Rosalie groans, a hand coming up to hide a part of her face while her red eyes narrow at you, her lips curling into a little smile that she's quick to drop before you could even see it. "I'm being serious, you can't woo me that easily."