show that night with william. >> she wasn't what you call a risque girl. she was a pretty safe bet. and here she was not wearing that much, looking amazing. i think everyone did think, wow. >> but that was the moment when he suddenly realized that his friend was actually very hot and he rather quite liked her. >> and the next fall when william and kate moved into this flat together with a couple of friends, their friendship turned romantic. >> it just sort of blossomed from there, really. we just saw more of each other and hung out a bit more and did stuff. >> you liked my cooking. >> your cooking was all right. it's got better. >> living with a girlfriend was almost unheard of for a member of the royal family. >> it was controversial, but i think it was felt that they didn't want mistakes of the past. they didn't want history repeating itself. and this was an opportunity for the couple to get to know each other. >> and to really get to know