Asked what marriage meant to him, whether it specifically meant "monogamy," he said, "I don't have to answer that. I never speak about my wife—which is one of the advantages of not being a politician. My marriage is and should be a personal thing." Trump continued, "I think any man enjoys flirtations, and if he said he didn't, he'd be lying or he'd be a politician trying to get the extra four votes. I think everybody likes knowing he's well responded to. Especially as you get into certain strata where there is an ego involved and a high level of success, it's important. People really like the idea that other people respond well to them."
That interview appeared in the March 1990 issue of Playboy, so it was conducted—reportedly over the course of 16 weeks—some months beforehand. Because by February 1990, the Trumps' marriage had imploded. Their separation was announced Feb. 11.
According to the Chicago Tribune, it all came to a head when the Trumps went to Aspen in December 1989 for their holiday ski vacation and Donald split his time between his wife and 26-year-old model
Marla Maples—and then the three of them all ended up at the same party and none of them left. Ivana had words with Maples at the most popular restaurant in town and proceeded to have an argument with her husband at the edge of the slopes in front of a growing crowd of intrigued onlookers.
"I feel for her," Maples said of Ivana, recalling the Aspen confrontation in >Vanity Fair's November 1990 issue. "I think she must have known in her heart it wasn't about me. There would never have been any discussion of my and Donald's friendship if things had been good... I was his friend for so long and I constantly said to him, 'Stay and make it work. Don't give up the marriage—you've got your kids.'"
At the time, funny enough, op-ed writers and society columnists welcomed the juicy respite from all the heated political news of the day.
Source : http://www.eonline.com/news/921996/donald-trump-jr-s-conflicted-world-how-his-parents-divorce-drama-and-his-relationship-with-dad-shaped-his-life