eclipse my heart wrote:Going on about what debussygirl said...
I wouldn't be surprised if Jasper's reason for staying with the Cullens WAS 95% based on Alice's influence. But I don't think that means he doesn't love and/or care about them. I guess that's why his character is the one that I feel the most sympathy for? Because he's suffering through something that he wouldn't have chosen for himself, just because he loves Alice so much.
Gonna jump in here. . .
To me, I think Jasper definitely would never have thought of living this life on his own. Not with the background he had. However, I also think that he did truly want to be a part of this family and their lifestyle. He felt guilty when he "cheated", when he couldn't control himself. And look at the way he reacted around Post-Bella and her super self control. He couldn't stand it that he still didn't have complete control of himself while Bella did.
Now I agree with Edward, that if Jasper had the same focus and attitude as Bella, that he probably could have achieved the same result. Still, even then, I think that Jasper did want to be more a part of the family than he is. If he didn't feel guilty about cheating, his attitude most likely would have been more similar to Laurent's. He would have hid his darker side from his family like Laurent did from Irina and the Denali branch. But Jasper didn't hide that side of himself.
It would be interesting to have a book about Jasper's life, to know more of his thoughts, and maybe even Alice's.