Donald Trump. (WENN.COM)

"Robert Pattinson should not take back Kristen Stewart. She cheated on him like a dog and will do it again -- just watch. He can do much better!"

Donald Trump offers an opinion.

It seems almost too easy to pick on Donald Trump, the man with the golden comb-over. But what the heck.

The Donald's latest crime against humanity is to weigh in on the subject of cheating in the relationship between Robert Pattinson and Kristen Stewart; this from a guy whose chippy faced down his then-wife on the slopes at Aspen. Perhaps, when Ivana Trump and Marla Maples were duking it out like deranged ski bunnies all those years ago, Mr. Trump felt it somehow burnished his reputation as a lady killer. Perhaps his cheating was different from everyone else's cheating. Marla Maples certainly felt their love for each other justified everything, even though Trump was cheating "like a dog" (bulldog springs to mind, doesn't it?) on his wife when their affair began.

Their affair led to marriage. A few months before their prenup would have increased Maples' take, you should pardon the expression, from a flat fee to a percentage of Trump's business, it was over.

These days, Trump is married to Melania Knauss, a former model about whom the Donald once said, "When we walk into a restaurant, I watch grown men weep."

Guess Trump followed his own advice and feels he's not only "done better", he's done best.

Guess the man whose view of the fairer sex includes ownership of the Miss Universe and Miss USA pageants should know when he's traded up to the highest point.

Still, it's a bit weird for The Donald to be offering advice on personal relationships, considering his own track record. It's weird for him to offer advice on several other topics, too, when you look at his list of failures. His Trump Entertainment Resorts company has flirted with bankruptcy more than once. He was deluded enough to talk about running for President and he hectored Barack Obama over his birth certificate; he has launched a vodka brand, an airline, a mortgage company and other projects that evaporated.

Of course, Trump has had success with television's The Apprentice and The Celebrity Apprentice. It's no surprise that he would do well with reality TV, although the shows only add to Trump's reputation as a boor and a bully. He's the guy happy to kick people such as Charlie Sheen and Rosie O'Donnell when they're down, and he's even been accused of trying to bully the Scottish government over a wind turbine project near the Aberdeenshire coast.

That's where Trump's planned golf mega-resort is being built. There's a hugely successful documentary film about Trump and his reign in Scotland called You've Been Trumped (directed by Anthony Baxter) that was made in defence of the local residents and the environment. The good news is that You've Been Trumped will start playing in Canada at the end of October.

If you want to know more about the guy who looks as if he has roadkill stapled to his head, You've Been Trumped could be your opportunity.