another thing on jacob imprint on renesmee, do renesmee already like jacob more than a friend and do jacob like her as more than a friend right now or is going to like her when she gets older
The way imprinting works is the imprinter is whatever the imprintee needs him to be. Right now, Jacob is like an overprotective older brother and Renesmee sees him as her favourite person.
Remember the story about the wife around the campfire? He'll love her and no one else even if she dies. They'll end up together. Look at the older ones that imprinted also.