Jasper smiled down at her. "You held out your hand, and I took it without stopping to make sense of what I was doing. For the first time in almost a century, I felt hope."
-Eclipse
"Secondly, he's really mostly doing this for Alice. Alice is Jasper's entire life. She is the most important thing in the universe to him, and he would do absolutely anything for her. For Jasper, there would be no limit to who or what he would destroy for Alice. Not that she wants him destroying anything. She's the light side of their relationship–she makes him laugh (and he wasn't much of a laugher before Alice). Jasper is the most "vampire-y" of the Cullens, and, while he's fond of them all, he's not bonded to them the way the rest of them are. The way Alice most definitely is. The whole high school thing really freaks him out. He's trying to get better at being around humans, but it's an uphill struggle." ~Stephenie Meyer
Though Rosalie and Emmett were more flagrant about their relationship, it was Alice and Jasper who knew each other's every mood as well as their own. As if they could read minds, too - only just each other's. ~ Midnight Sun
Jasper was the first one I saw—he didn't seem to see me at all. His eyes were only for Alice. She went quickly to his side; they didn't embrace like other couples meeting there. They only stared into each other's faces, yet, somehow, the moment was so private that I still felt the need to look away. -New Moon
Alice and Jasper aren't into show, but they have the deeper relationship. They are married, but once was enough for them. - Stephenie Meyer
“And you ducked your head, like a good Southern gentleman, and said 'I'm sorry, ma'am.'" Alice laughed at the memory.
