His reaction was pretty mature in fairness.

Professor Green and Millie Mackintosh announced their split over a month ago, and since then there have been plenty of stories about a supposed feud between the pair. For example, just last week, Millie reportedly wore her wedding dress as a Halloween costume, which she covered in blood. Professor Green was speaking on This Morning where he insisted that there is no bad blood between the former couple. Presenter Philip Scholfield asks him about lyrics to his new song One Eye On The Door, which seem to talk about his ex-wife with lines including:

''I'll probably get kicked out of my house

'til I come back with a brand new Chanel bag''

Professor Green calmly and confidently claims that there is no badness in the song, adding that Millie even initially featured on the track.

''Listen...at the beginning of the song...initially that was Millie. When the song was coming out, she text me to say "you must be happy it's coming out after all this time", like, whatever the press want to make it into, that's fine...But the song was written at a time when we were actually still together.

Philip then asked, if there is no spite between the couple, how did he feel about the wedding dress picture, and he had no idea what they were talking about. When they show him the image of Millie's dress covered in blood, he seems shocked.

''Oh what, has she used her wedding dress for a bloommin' Halloween party?''

While he could have understandably gotten a bit awkward or even angry at this point, he laughs about it, adding:

''Well at least she got to wear it again. Most people don't get to wear their wedding dress twice do they? I dunno if she paid for it or her parents did but, it's hers to do what she wants with it.''

When the rapper was asked if it hurt to see this he says it's important to see the funny side.

''Come on mate, if you can't have a sense of humour...Divorce is horrible, but when you come out the other side of it, if you've been married to a person and you can't look back on it with any kindness, then it really was a mistake. If I was bitter about it, like people want to make out, that would be really sad, because it would've meant that I really really did make a mistake. When we got married, we never got married to get divorced, we got married because we were young and in love.'' He says. 

Fair play to Pro Green for keeping so calm and collected, and appearing genuinely at peace with Millie. You can watch the full interview here, he speaks about Millie and the dress about 1.45. https://www.youtube.com/watch?v=qDBZw7LJjMo