Speaking to the Sunday Times, he said: "We owed it to the characters. Let's see what they're doing. We wanted to see if there was something there. Once there was, my feeling was, life's too short".
"Fear is the absolute reason to do it. This sounds ridiculously deep but none of us are promised tomorrow. We're here for a minute, you have to try to do it all".
Discussing storylines, James said him and Ruth had thought about mentioning Brexit but they "just wanted the new show to be a nostalgic joy-bomb" AND we will never find out what happened on THAT suspicious fishing trip! But wouldn't that just ruin the mystery?
We're just excited for some more iconic moments!
Other cast members have also dropped hints about the storylines but are remaining very tight lipped!
What do the Gavin and Stacey cast look like now?!
James Corden teases fans with Gavin and Stacey reunion details!
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And this is him now...
Long gone are the days of Bryn as a humble telly actor. Rob has since gone on to star in Hollywood movies including The Huntsmen: Winter's War (he played Gryff) and he played Master Phineus in the real life version of Cinderella.
Mathew Horne - a.k.a Gavin, then
Viewers saw Mathew's character, Gavin, fall in love with Stacey pretty quickly - he drove all the way to Barry to surprise her after their night together. We saw the couple laugh, row and welcome a baby. N'aww.
And this is him now...
Mathew's come a long way from playing good ol' Gav - he's now playing Young Mr Grace in Are You Being Served and continues to collaborate with James Corden on a number of projects which included hosting The Brits in 2009.
Joanna Page - a.k.a Stacey, then
Joanna smashed it as Stacey; the bubbly girl from Barry who got engaged five (yes, five) times before she met the love of her life Gavin. Bless her.
And this is her now...
Similar to her character Stacey, Joanna settled down in real life too and is now mum to three children - a daughter, Eva, and her two sons, Kit and Noah.
James Corden - a.k.a Smithy, then
Err, James Cordon as Smithy was absolutely hilarious tbh. He kept us entertained with his dancing, love for Gavin and love/hate relationship with Nessa.
And this is him now... (along with the star of one of his majorly successful Carpool Karaoke's, Selena Gomez)
Do we really need to fill you in on this one? No, probably not, because he's everywhere. But incase you've been in hiding under a rock for the past few years, James has been doing pretty much EVERYTHING and has a majorly successful US TV programme - The Late Late show.
Ruth Jones - a.k.a Nessa, then
Oh, what's occurring? Need we say more? Ruth was brilliant as Nessa; fierce and hilarious and as much as we saw how happy she was with Dave, we always knew Smithy was the one that truly had her heart.
And this is her now...
She is arguably one of the funniest Welsh people to have ever lived, and since Gavin and Stacey Ruth has lived in Cardiff with her husband and three grown-up stepchildren.
The actress has also been appointed an MBE - go Ruth!
Larry Lamb - a.k.a Mick Shipman, then
Larry is a prime example of a good actor. Despite seeing him play Archie Mitchell in EastEnders, we couldn't help but fall in love with Mick from Essex. Unlike Archie Mitchell, Mick actually loved his family...
And this is him now...
Since Gavin and Stacey, Larry has embarked upon all kinds of work; he appeared in New Tricks and I'm A Celebrity... Get Me Out Of Here! alongside Scarlett Moffatt.
Alison Steadman - a.k.a Pamela Shipman, then
Alison's character Pam was probably the most iconic of them all. We loved her that she made to pretend to be a vegetarian up until the Christmas special where she finally told everyone she was eating meat - they all (minus Gwen) knew.
And this is her now...
Since Gavin and Stacey ended, Alison has appeared in Orphan Black in 2015 and currently lives in Highgate, London with her partner Michael Elwyn.
Rob Brydon - a.k.a Bryn West, then
Ahh, Rob as Bryn was an absolute classic. There's so many hilarious moments of him to choose from but whenever we think of him our first thought is, of course, the Gavin and Stacey fishing trip...
And this is him now...
Long gone are the days of Bryn as a humble telly actor. Rob has since gone on to star in Hollywood movies including The Huntsmen: Winter's War (he played Gryff) and he played Master Phineus in the real life version of Cinderella.
Mathew Horne - a.k.a Gavin, then
Viewers saw Mathew's character, Gavin, fall in love with Stacey pretty quickly - he drove all the way to Barry to surprise her after their night together. We saw the couple laugh, row and welcome a baby. N'aww.
And this is him now...
Mathew's come a long way from playing good ol' Gav - he's now playing Young Mr Grace in Are You Being Served and continues to collaborate with James Corden on a number of projects which included hosting The Brits in 2009.
Joanna Page - a.k.a Stacey, then
Joanna smashed it as Stacey; the bubbly girl from Barry who got engaged five (yes, five) times before she met the love of her life Gavin. Bless her.
And this is her now...
Similar to her character Stacey, Joanna settled down in real life too and is now mum to three children - a daughter, Eva, and her two sons, Kit and Noah.
James Corden - a.k.a Smithy, then
Err, James Cordon as Smithy was absolutely hilarious tbh. He kept us entertained with his dancing, love for Gavin and love/hate relationship with Nessa.
And this is him now... (along with the star of one of his majorly successful Carpool Karaoke's, Selena Gomez)
Do we really need to fill you in on this one? No, probably not, because he's everywhere. But incase you've been in hiding under a rock for the past few years, James has been doing pretty much EVERYTHING and has a majorly successful US TV programme - The Late Late show.
Ruth Jones - a.k.a Nessa, then
Oh, what's occurring? Need we say more? Ruth was brilliant as Nessa; fierce and hilarious and as much as we saw how happy she was with Dave, we always knew Smithy was the one that truly had her heart.
And this is her now...
She is arguably one of the funniest Welsh people to have ever lived, and since Gavin and Stacey Ruth has lived in Cardiff with her husband and three grown-up stepchildren.
The actress has also been appointed an MBE - go Ruth!
Larry Lamb - a.k.a Mick Shipman, then
Larry is a prime example of a good actor. Despite seeing him play Archie Mitchell in EastEnders, we couldn't help but fall in love with Mick from Essex. Unlike Archie Mitchell, Mick actually loved his family...
And this is him now...
Since Gavin and Stacey, Larry has embarked upon all kinds of work; he appeared in New Tricks and I'm A Celebrity... Get Me Out Of Here! alongside Scarlett Moffatt.
Alison Steadman - a.k.a Pamela Shipman, then
Alison's character Pam was probably the most iconic of them all. We loved her that she made to pretend to be a vegetarian up until the Christmas special where she finally told everyone she was eating meat - they all (minus Gwen) knew.
And this is her now...
Since Gavin and Stacey ended, Alison has appeared in Orphan Black in 2015 and currently lives in Highgate, London with her partner Michael Elwyn.
Rob Brydon - a.k.a Bryn West, then
Ahh, Rob as Bryn was an absolute classic. There's so many hilarious moments of him to choose from but whenever we think of him our first thought is, of course, the Gavin and Stacey fishing trip...
And this is him now...
Long gone are the days of Bryn as a humble telly actor. Rob has since gone on to star in Hollywood movies including The Huntsmen: Winter's War (he played Gryff) and he played Master Phineus in the real life version of Cinderella.
Matthew Horne, who plays Gavin, says the character will be a 'tired dad' with an 'almost grown-up child'. He said: "There's very, very little I can give away. I think the audience will be pleasantly surprised and warmed by what they see. I have every confidence people are going to really like it".
"The script is really beautiful, it's really funny and it's really heartwarming. There'll be laughter and tears". Larry Lamb has already admitted to crying when he read the script.
We cannot wait!
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