Vince Vaughn is terrified of having children.

The 'Couples Retreat' actor, who is engaged to estate agent Kyla Weber, struggles to bond with babies as they can't express their feelings.

He said: "Am I prepared for fatherhood? I don't know. It's really scary until they talk because you don't know what they want. But I am sure I will be very happy."

Vince has also refused to be drawn on when he will tie the knot with Kyla, but is convinced she is the love of his life.

The 39-year-old comic star said: "I am not nervous about the big day because I haven't planned a big day."

Vince admits his previous romances have been disappointing and he is afraid getting married could ruin his relationship with Kyla.

He told Britain's Independent newspaper: "The only expert thing I know about a relationship is that I don't know anything. I think every time I think I know something obviously you then learn that you don't know anything, but I do know this to be true: I know that men marry women hoping that they will not change, and women marry men hoping that they will change, and inevitably everyone is disappointed."