McBusted's Tom Fletcher reveals his bipolar battle: 'I was struggling'

has spoken for the first time about his

, admitting that there were times he "

". In the final part of ITV's

, the 28-year-old explained, "I realised that I was struggling more than other people around me were."

© Photo: ITV

Tom Fletcher spoke to Fearne Cotton about dealing with his bipolar condition

He said that he didn't know he had the disorder until he heard other people talking about it, but he sought help — and it

."I think it was Harry who said, 'You've got your laugh back. You haven't laughed like that in four years'," the dad-of-one said.In March, Tom and his wife

welcomed their first child together, adorable baby boy

, and the singer said that since becoming a daddy, he's

.

© Photo: Instagram

Tom Fletcher and wife Giovanna welcomed their first child Buzz earlier this year

The revealing ITV documentary also saw

and

talking candidly about their time in rehab.Matt's wife

broke down in tears as she spoke to Fearne about the musician's

."

. We hadn't known each other for very long and I was kind of in this whirlwind with him," said Emma, who has been married to Matt since 2008, and has two children with him.

Tom Fletcher's bandmate Matt Willis and his wife Emma also spoke candidly to Fearne Cotton about his addiction

"You don't really think about it, then more time goes along and he went in again."Trying hard not to cry, she added, "

.""I'm not going to leave him because he has a problem.

."