A lover of surprises, Syl proposed to Heidi Klum in an igloo made of ice, which he had ordered to be built in the mountains at an altitude of 4267 meters especially for this event. The lovers had a romantic dinner with candles, roses, champagne and a 10-carat diamond engagement ring. Heidi could not refuse such a romantic offer. The couple has been happily married for many years and has four children.