Complex sentence: He had been separated from Marla Maples since May 1997, and entered a steady relationship with Melania; the new couple gained attention after a 1999 interview on "The Howard Stern Show".
Split into simpler sentences: He had been separated from Marla Maples since May 1997, and entered a steady relationship with Knauss. The couple gained attention after a 1999 interview on "The Howard Stern Show".