Heidi Klum is not sure she will ever marry again.

The 'Project Runway' judge admitted that she is wary of another legal union - although she did love being married to musician Seal, whose separation (after seven years of marriage) was announced in January.

She told the weekly newspaper Bild am Sonntag: "I don't know if I'll get married again. Although I really enjoyed being married. I'm a dreamer. I loved our annual fairy tale weddings that were our big family parties. But sadly, it somehow didn't work out."

The 39-year-old supermodel denied that she is dating Thomas Hayo, her 'Germany's Next Top Model' colleague.

She revealed: "He is not, nor was he ever my boyfriend. I think he is a great guy, but not for me."

Heidi said that she is generally satisfied with her life now as a single woman.

Heidi added: "I think everyone should work on their dreams. I try to. I look into the future, concentrate on my family and I have to say that I'm happy. There are worse things in life than a separation."