Heidi Klum, 40, and her bodyguard-turned-boyfriend Martin Kristen, 45, have been arguing over the fact that she’s not so interested in getting married again, but Martin thinks it’s the next logical step in their relationship. They have already exchanged gold promise rings and Martin cares for her children like a father. Heidi and her children both love Martin and she doesn’t want to lose him, so she’s trying to work something out. Martin is uncomfortable acting as both bodyguard and boyfriend – he’d like more equality in their relationship and Heidi can’t blame him. According to the National Enquirer, Heidi is planning to have an iron clad prenup, and her 70 million dollar fortune will be held in trust for her children. Martin would walk away from the marriage with nothing. We’re guessing he’ll cooperate.