I like the beginning of this (as you can tell, I used it in my final draft) but I think she gets too... oh, un-Leah-ish in the later part. And the last parts of dialogue are WAY eww. Bad lines.

"Face it, Jacob. She's not coming back."

A low growl rumbled in the back of his throat. I could tell he was trying to make himself sound like he wasn't about to fall into a million different pieces. It didn't really work as well as he had probably hoped.

"If that's the best you can do to shut me up, I'm going to be talking all night." When he didn't respond, I turned my head to look at him.

Jacob sat on a dead log across from me, gazing aimlessly into the fire that separated us. There was no trace of his normally playful demeanor. Instead, it had been taken over by hopelessness. He was nearly expressionless, but the lines on his face made him look much older than seventeen, and his hands were clenched into tight fists. A haunted longing smoldered in his dark eyes as he continued to stare into the blaze. It almost looked like he was searching for something in the light that danced before him. Something he would never find.

I tore my eyes away from him, averting my gaze to the full moon that hung above the treetops. Seeing Jacob like that was nerve-wracking. Not only did I feel his hurt through the mental link that bonded us, but I couldn't help but remember how I felt when Sam left.

And, okay, I'll admit it. Jacob wasn't such a bad person himself once you got to know him. He was actually kind of bearable when he wasn't around that intolerable half-leech. If you think about it, his imprinting was actually pretty disgusting. The whole thing was unnatural, but a werewolf and a vampire-human hybrid? Just imagine their child! If he had never imprinted on Renesmee, we could… no, would have been…

I shook my head to clear my thoughts. I had promised myself I wouldn't think like that. Getting my heart broken once was enough for my lifetime.

Across the fire, Jacob muttered something I couldn't discern. I looked back down. "What?" I asked quietly.

He met my eyes. "You're right."

I opened my mouth to reply, to brag about how I was right all along, how he never should have trusted that perfect brat, and maybe to throw in a couple of I-told-you-so's on the side, but I couldn't. I just couldn't do it.

While I sat there gaping like an idiot, he turned his eyes to the forest surrounding us. "Renesmee will be happier now that she's gone off with Nahuel. We'll both be happier." Jacob sighed. "Imprinting may seem real... but in my heart it's false."

"I guess you can't call it true love anymore."

Jacob smiled for the first time in a week. "I guess not." He turned his gaze back to me. "But there is someone who I can."

I couldn't help it: I grinned back at him and laughed. "You're going to have to do better than that."

"I love you?"

"It's an improvement."