Jai reaches breaking point in the coming days as Rachel Breckle (Gemma Oaten) leaves him out in the cold when she finally brings young Archie home from the hospital.
With Sam Dingle (James Hooton) seemingly becoming a father figure in his place, Jai cannot cope any longer. Needing space, he decides to head off on an extended business trip to France - but does this mean the end of his marriage to Charity?
Here, Chris Bisson - who plays Jai - chats about the build-up to his character's two-month break from the show.
How would you describe the current situation between Jai and Charity?
"Things have become very difficult for Jai with baby Archie soon coming back to the village. On top of that, his relationship with Rachel is permanently difficult because of the big secret they're hiding! Charity is picking up on his tetchiness and his uncharacteristic behaviour, so he's in a really bad place and he's not the Jai that we know."
Jai must be relieved when he hears that his son can finally come home from hospital, though…
"Jai had planned for his son to come home and he bought the house for Archie and Rachel in the village for that. However, Rachel doesn't communicate with Jai at all, so all of the information he gets is second hand.
"Jai only finds out that Archie is coming home because Ali and Ruby come to ask him for the keys to Rachel's house. That's the first he's heard of it. He's not in charge of the situation and there isn't any communication from the mother at all."
Does Jai worry about how Rachel might cope with motherhood?
"I think he naturally does have reservations. These are the things that Jai didn't think about when he asked Rachel to keep the baby! Rachel is the village chav, so she wouldn't be his first choice for the mother of his child! It's a problem.
"Rachel's lack of experience shows through in some ways, and Jai is also a lot older than her so they're communicating on a very different level."
How does Archie being brought into the village affect life for Jai?
"It's a very difficult time for Jai. He doesn't really know what's going on and because Rachel won't communicate with him, it makes things even more tricky. Jai and Rachel only ever come together at points of friction. There's never anything nice about that relationship, because Jai is trying to force his way in and Rachel is trying to push him out.
"Jai has never even been able to hold his baby, and it's driving him insane. When Archie does come home, Jai notices that Sam is stepping in, he's looking like the father and holding the baby. It's driving Jai crazy."
What happens next?
"The image of Rachel, Sam and Archie as a family is killing Jai. Sam spends a night at Rachel's helping her look after Archie and although it's innocent, Jai can tell that it's pushing in another direction. That's where Jai would like to be - looking after his baby.
"Things then get even worse when Jai is at The Woolpack and we see Rachel and Sam bring Archie inside. This is a big problem for Jai, because the baby was born prematurely just a few weeks ago. Archie still isn't even full-term, and Rachel is bringing him into a pub.
"Jai confronts Rachel about this, but she's very resistant and adamant that she's doing nothing wrong, although clearly a well-advised parent wouldn't take a 36-week old baby into a pub! It drives Jai mad and it hits home that he has absolutely no control over this child."
Why does Jai and Rachel's argument become so public at The Woolpack?
"Rachel is quite resolute and tells Jai not to give her any grief about this. He turns round biting his tongue but then he bumps into Sam, who spills a couple of pints on him.
"Jai just snaps and lets rip. He calls Sam all the names under the sun and Rachel ends up defending Sam by slapping Jai, which Charity witnesses. The whole pub comes to a standstill!"
Does Charity get suspicious?
"It's a strange one, really. Charity thinks Jai is making a scene because she still won't give him what he wants - a child of their own. But it just reaffirms to Jai that he can't stick around in the village anymore. He can't handle the lies, the deception and the fact that his baby is kind of being mistreated. He has no control over that, so he's fighting a losing battle."
How far can Jai realistically go in his arguments with Rachel, given that she could cause a lot of trouble for him?
"Rachel always has the upper hand. She has the baby which is what Jai desperately wants, and she also keeps threatening to tell the secret. Why she doesn't tell the truth is a judgement for the audience to make at this stage, because she may threaten it, but actually going through with it would have pretty serious consequences for her and the baby!
"If Rachel told the truth, she wouldn't have an easy ride from Charity. The house and the maintenance and all of those things she's enjoying would probably be in doubt. She may well get them back, but in the short-term, it would be a big risk. But we haven't really seen what the big risks are on Rachel's part."
Why does Jai decide to leave for the extended business trip to France?
"He's got a baby that he can't see, he has surrounded himself with layer upon layer of lies, and he is constantly dodging bullets. He's in a terrible place and he can't handle it.
"The audience will probably see that the situation is of his own making. Part of me does feel for him because he's in such a tight spot, but then part of me thinks he's got what he's deserved. I think the story team here have managed to weave the story, make it complicated and muddy the water significantly.
"It's not clear who's right and who's wrong. I think some people will sympathise with the fact that Jai's desire to have a baby has put him in a terrible spot. He should have been honest and told the truth, but it's a soap and that wouldn't be any fun!"
Charity warns that she won't wait for Jai while he's away. Isn't he tempted to just tell her the truth as their marriage is in trouble anyway?
"Their relationship is certainly hanging by a thread. Why he's holding onto it, I don't know - maybe because he loves his wife and he loves Noah.
"Jai has always been the nice guy, and he still is that person underneath. I've had to work out a reason why, and I think Jai believes he's protecting people in some ways. It'd be much easier if he just came clean, but it's a ticking timebomb. The audience wouldn't want Jai to come clean just yet!"
Is your on-screen break connected with the recent arrival of your baby son Harry in real life?
"Yes, this is why Jai has hit rock bottom, because he needs to leave the show for a while! I'll be back filming in February and I'll be back on screen at the end of March. You've got a two-month break from me!"
> Read the latest 'Emmerdale' spoilers and news
Emmerdale airs weeknights at 7pm on ITV, with an extra episode at 8pm on Thursdays.
New! Digital Spy Soap Scoop video - watch Amie Parker-Williams discuss the biggest storylines on the way in Coronation Street, EastEnders, Emmerdale and Hollyoaks.