There are two sections that struck me the most, and are probably the best explaination for the suppressed feelings and actions Bella has towards Jacob. Don't get me wrong, I'm Team Edward all the way. The whole center of the story is Edward and Bella...but I understand the necessity of Jacob's character. The story wouldn't have been near as interesting if Bella had collapsed into a solid friendship with Mike.
In the Epilogue of New Moon, Bella makes the comment that everything was almost back to how it was before, and that the time the Cullens were gone seemed more like a nightmare than anything else. But before Fall (before Edward leaves) she had not been best friends with Jacob, so she didn't miss him.
"The fairy tale was back on. Prince returned, bad spell broken. I wasn't exactly sure what to do about the leftover, unresolved character. Where was his happily ever after?" I think this is the most significant statement. She not only voices her own thoughts but mine as well. In New Moon, Jacob evolved to step into the role of romantic interest and became one of the main characters that should have had resolution. Everything else falls into place when Edward returns, except Jacob. Jacob is shoved from his place with that return and he resents Edward, in part, because I think he realized that Bella would have settled for him given enough time. Jacob had a human reaction to a supernatural situation and Bella never responded the way a normal human would to anything.
In Eclipse, when Bella leaves work and goes to see Jacob he asks her,
"So what's the story, anyway?"..."I mean, since the last time we...well, before, you know..." He struggled for the words. He took a deep breath and tried again. "What I'm asking is ... everything is just back to the way it was before he left? You forgave him for all of that?"
It was an awkward position for her. Like telling your best friend that you despised her husband after they separate and then they get back together.
You know things can't go back to before that event, so how do you deal with the new position that you have put yourself in?
I think Jacob expected her to be angry enough at Edward to make him have to "win" her back and she didn't make him do that. She loves Edward unconditionally just as he loves her and when you feel that way, there is no reason to "prove" yourself.
I know that Bella cared about Jacob a great deal. Loved him, in fact, but more like a brother and best friend than she ever could love him romantically. But, she was going to settle. She had almost decided to be happy with what she had instead of being miserable over what she thought she could never have again. At that moment, literally, Edward comes back into her life. A chance to have a small part of what she had lost, a chance to at least see him again. So any feelings that she had built up for Jacob were left unresolved. Which is why Edward understands that it's essentially his fault for Jacob being in her life. There's no way to know, of course, but we're assuming that she wouldn't have gotten that close to Jacob had Edward not left. He sees Jacob as a consequence of his own actions. Had he not left, Jacob wouldn't have been necessary to Bella's survival.
Any of us who have read MS know that one of Edward's reasons for deciding to be closer to Bella is that he realizes she will one day say yes to someone and he realizes he wants that person to be him. He believes that if he wasn't around, she would eventually be interested in someone. I had to explain this to my husband also. Think of the story without the supernatural aspect. Bella moves to Forks and meets her childhood friend Jacob whom she ends up marrying...This is what would have happened if vampires didn't exist. And if they didn't exist, Jacob would be the most logical choice for her to make. But we know that Bella would have never considered Jacob if Edward hadn't left. She would never have entertained the idea of being happy with him. But Edward did leave...and Bella did consider Jacob. Not as a substitute, but as an alternative. She realized in Eclipse that her own feelings for Jacob were what was unresolved. That door was opened, and there was no way to close it again. She couldn't let it go until she faced and dealt with those feelings. That would be like trying to unsee the meteor Edward compares Bella too. She was changed by Edward leaving as much as he was changed by her showing up in Forks.
I think that we saw her feelings in New Moon and then were left in the dark, much as she was herself through Eclipse. She didn't want to deal with the leftover character. She just wanted to be back in the fairy tale and be happy. I also think Jacob himself was a reminder of the reason she was in that position to begin with. For her to deal with her feelings for him, she also had to come to terms with the fact that Edward had devastated her and that she had been only a shell of a person. That she
had needed to lean on someone. And let's face it. Bella is not used to needing help or being taken care of...