Answer
1.) When did they become friends?
in 2001
2) Where did they move in 2002?
to a shared flat (with friends)
3) How did it turn out that they were dating?
they were seen (spotted) skiing together
4) Did Clarence house deny that they were dating?
no (refused to deny)
5) Where did the couple travel after graduating?
to Kenya (to a romantic break)
6) Who asked the press not to disturbe Kate?
her lawyer
7) Why?
because the press was haunting her
8) When did they break up?
on 14th April, 2007
9) Where were they seen together again?
at Princess Diana's tribute concert
10) Did William and Kate attend his cousins wedding together?
no (William failed to attend it)
11) Did the royal family accept Kate by then?
yes
12) After announcing their engagement what is awating them?
planning a royal wedding