He has revealed he 'can't wait' to become a father, after being inspired by Rochelle's bandmate Una Healy, who gave birth to her first child Aoife Belle earlier this year.
In an interview with Look magazine, where he posed with his JLS bandmates in a Halloween inspired photoshoot, he said: "I’m so excited about becoming a dad, I can’t wait.
"We’re both keen to have a big family. And Una has got Aoife, so it shows it can work when you’re in a band."
And it looks like we could be hearing the pitter-patter of tiny popstar feet quite soon, as 27-year-old Marvin wants to have a baby before he hits the big three-oh.
He added: "Hopefully I’ll be a dad by the time I’m 30 in three years, or maybe in two…"
The newlywed is also looking forward to welcoming Rochelle back from America, where she has been with her bandmates since their wedding, which he admitted has placed a strain on their relationship.
"It hasn’t been the most ideal start and I’d be lying if I said it hasn’t been tough," he said.
"We were in the honeymoon period and then she went to America. She’s back at the beginning of November and I’m counting down the days. But we’re extremely strong and we talk on the phone loads."
To read the JLS interview in full see the new issue of LOOK magazine out now.