Will Jacob ever get older and eventually die?

great question. Laying out the facts:

In the books, Jacob told Bella that Werwölfe existed because of the vampires. Jacob also sagte that when they are werewolves, time is sort of put on hold.

When the "shape shifters" aka Werwölfe phase, they stay young until the Cullens oder other Vampire leave their land.

Now in answer to your question:

Jacob imprinted on Renesmee, who isn't a full vampire. I think with just Jacob and Renesmee, Jacob would age.

If the Cullens remained with Renesmee (and that is most likely), Jacob would stay young.

But, Werwölfe don't live forever. They eventually die. Their age is just put on pause.

I don't think there's a right oder wrong answer. We may have to hear it from the Autor herself :)

he would have stayed young forever anyway, because of his wolf form. He sagte before, if Du carry on changing into a wolf regularly, Du never age, oder die. But that if Wölfe stopped changing for a long period of time, they'd start aging again. so he will stay young in the same way the Cullens and Renesmee will, because him changing into the wolf keeps him yougn and stops him aging.

I think that Jacob could potentially live forever, like vampires. Wölfe shape shifting gene causes a pause in aging, so as long as they keep phasing, they won't age.

Most Quileutes eventually stop phasing so that they can age again and grow old with their imprintee oder mate. However, in Jacob's case, Renesmee will live forever. Once she hits a certain point of growth, she will stop growing and stay the same forever. Because of this, Jacob is potentially probably one of the only Quileutes that could live forever. He is the only one, thus far, with a mate that could live forever. I would say he is the only one with an immortal mate, but Renesmee is only half-immortal. But still, the same concept applies, and this is what I think.

wow idk.great question

Yes Jacob will, once hes finished being a wearwolf which is once theres no vampires, so i guess no, Jacob will die oce Vampire do, cuz then hes not needed.

that is something we will never know

I don't actually know the answer based on Stephanie Meyer's Bücher oder the films but in my version they carry on aging slowly until they reach about 30 while they are still phasing regularly.