By imprinting on Renesmee, Jacob has imbued her with protection from other werewolves in his tribe. Prior to taking her on as a romantic partner, Jacob would first act as an older brother to Renesmee until she grew up – which won't take long given her hybrid nature, which makes her age more quickly.
In Jacob's case, he imprinted on Renesmee — who he affectionately dubbed Nessie — when she was a baby, so no, it doesn't mean he's in love with her. Jacob just has a strong bond to Renesmee and is more of a protector and as she gets older, will be a best friend, someone who's there for her when she needs it.
Jacob Black explaining to Bella Swan about imprinting. Imprinting is the involuntary mechanism by which Quileute shape-shifters find their soulmates. It is a profound, intimate phenomenon that exists among the Quileute shape-shifters.
While Jacob insists his feelings for Renesmee (Mackenzie Foy) will remain completely platonic until later in her life (as does Twilight author Stephenie Meyer), Bella (and most of the fandom) find their relationship to be unsettling at best.
He actually thought he'd never imprint because he loved Bella and he didn't believe he'd ever have the capacity to care any more about someone else. Then he made eye contact with her daughter, and that was it.
Renesmee got married to Jacob and made Lucina her maid of honor. In Have A Purpose, Renesmee reveals that she is pregnant. She gives birth to Evan and Sarah and appointed Lucina as the godmother to her kids.
Bella gets pregnant after one night of passionate sex with her husband Edward the vampire, sex that leads to the destruction of their idyllic honeymoon suite.
As a result, she not only gains immeasurable strength and good health, but her daughter, Renesmee, is born a vampire-human hybrid. Renesmee is special, because she is not an Immortal Child, or a child that was bitten by a vampire. Instead, Renesmee is born biologically.
So if freezing for a hybrid just means not aging anymore, then Renesmee could be perfectly capable of getting pregnant. The child would be half human, half vampire, and half wolf.
Members of the Quileute wolf-pack do age if they do not phase for a long time; Jacob's body has physically grown to the equivalent of a 25-year-old in Breaking Dawn but stops aging after that. Jacob is the largest and strongest of the pack.
By imprinting on Renesmee, Jacob has imbued her with protection from other werewolves in his tribe. Prior to taking her on as a romantic partner, Jacob would first act as an older brother to Renesmee until she grew up – which won't take long given her hybrid nature, which makes her age more quickly.
In Twilight, he is fifteen years old, and in New Moon, he phases into a wolf for the first time at the age of sixteen. In Breaking Dawn, he imprints on the hybrid baby named Renesmee Cullen, the daughter of Edward Cullen and Bella Swan.
Just before Jacob almost kisses Bella, he says "Kwop kilawtley," which means "stay with me forever" in Quileute.
Jacob Black imprinted on Renesmee Cullen, the daughter of Bella Swan and Edward Cullen, at birth in Book 2 of Breaking Dawn. Jacob was initially in love with Bella, but she chose Edward and gave birth to Renesmee, a half-human, half-vampire hybrid.
Bella chose Edward over Jacob because Edward associates more with Bella, is more similar to her, and appears to Bella as a better parent and provider. Edward and Bella are in closer proximity than Jacob and Bella because Edward and Bella go to school together.
Edward says Renesmee is his niece, and that he and Bella are adopting her. Charlie, however, figures out the truth when he stares into Renesmee's chocolate brown eyes; his chocolate brown eyes. He agrees, however, to stick to the adoption as the public story to protect them.
In Twilight, the fictional Quileute wolves imprint on the person they are supposed to be with forever. According to Sam Uley, this ensures they end up with the best match to propagate the pack or whatever. Somehow, despite the species differential, Jacob imprints on newborn Renesmee and he has no choice but to Stan.
Seeing as she's half vampire, one would think she would age much slower than humans, since vampires can't age at all. However, poor unloved Jacob shouldn't have to wait eighteen years for his happily ever after, so Renesmee grows abnormally fast, and will magically stop aging once she reaches sexual maturity.
The Cullens are safe again, and Renesmee is able to stay with her family. Nahuel states that Renesmee will probably reach complete physical maturity around seven years after her birth, at which point she will stop aging and live to an unknown extent of years.
At the end of Eclipse, she becomes engaged to Edward Cullen, and they marry in Breaking Dawn, one month prior to her 19th birthday. On their honeymoon, she becomes pregnant, and, due to the peculiar nature of her baby, Bella nearly dies giving birth to their daughter, Renesmee.
Breaking Dawn
Edward reads Renesmee's mind. Edward hears inappropriate thoughts from Mike Newton about Bella and discovers Jacob's appearance using mind reading to pick up his mind.
However, as a half immortal, she will continue to grow until her full maturity at the age of about seven, at which point she will appear to be about seventeen (like her father Edward) and will cease to age (as shown by Nahuel in Breaking Dawn).
Breaking Dawn links sex and danger, at least initially. Before Bella becomes a vampire, sex with Edward poses a serious threat to her. Edward is afraid that he'll accidentally kill Bella, and she does indeed wake up covered in bruises after they first have sex. However, Bella doesn't seem to mind.
He felt changing her would be like killing her. All members of the Cullen family were changed at the brink of death, Bella still had her life ahead of her.
Bella falls in love with Jacob in New Moon. I think it's easy to understand why this fact doesn't occur to her. Bella has only fallen in love one time, and it was a very sudden, dramatic, sweep-you-off-your-feet, change-your-world, magical, passionate, all-consuming thing (see: Twilight).