Willem was one of Kate Middleton’s first loves. The two were schoolmates and Kate was apparently very hung up on him. But it didn’t work out in the end. They dated while she went to Marlborough College. But the two seem to still be good friends and he was even invited to her wedding. Willem Marx even got married himself a while back, although Kate Middleton didn’t return the favor and come to his wedding, which strikes us as a little strange.