Actually, he’s been married 3 times.
The first was to Ivanna (1977-1992), the second was to Marla Maples (1993-1999 ). Melania is his third wife (2005 to present).
Trump's affair with Marla Maples led to his first divorce.
Trump’s second marriage to Marla Maples was rocky from the start. They separated in 1997 and divorced in 1999 – just 5 months before a prenup agreement would have would have increased her divorce settlement from $1 million to $5 million. The reason for the divorce - He says He didn’t want to get married to her in the first place; that it was just lust, not love. She said that it was because the marriage was "built on an illusion" and that she and Trump were never good together as a couple. "He was too ego-driven and obsessive".
Donald met Melania (his third and current wife) at a Manhattan nightclub when he was on a date with someone else. Melania, who is from Slovenia, claimed that she had no concept of Trump’s reputation or celebrity status at that point.