Los Angeles:
The JLS star and The Saturdays singer are making final preparations for their marriage - which will take place in the next few weeks - and while he doesn't think he will cry when he sees her in her bridal dress, he is sure she will look amazing.
He said: "Of course it will be emotional, but I'm not sure if I'll be crying and stuff because I'm not really that kind of guy.
"I can't say what I'll be like for sure until I'm in that moment - for all I know, I could end up a blubbering mess. I do know that Rochelle will look incredible. She'll be the most beautiful bride."
Marvin admits he has been "wishing the weeks away" in the run-up to the nuptials because he is desperate to celebrate their love with their families and friends.
He added: "The time has gone so fast. It seems like only yesterday that we were in the Maldives and I was asking Rochelle to be my wife.
"But I guess we've been wishing the weeks away because we are just so excited and so are our family and friends. We have had some really nice messages from people saying they can't wait."
He said: "Of course it will be emotional, but I'm not sure if I'll be crying and stuff because I'm not really that kind of guy.
"I can't say what I'll be like for sure until I'm in that moment - for all I know, I could end up a blubbering mess. I do know that Rochelle will look incredible. She'll be the most beautiful bride."
Marvin admits he has been "wishing the weeks away" in the run-up to the nuptials because he is desperate to celebrate their love with their families and friends.
He added: "The time has gone so fast. It seems like only yesterday that we were in the Maldives and I was asking Rochelle to be my wife.
"But I guess we've been wishing the weeks away because we are just so excited and so are our family and friends. We have had some really nice messages from people saying they can't wait."
