one dout plz clear

M : mujhe tumhari bohot yaad arahi thi (hugs Virat)
V : kya ..tumhe meri yaad arahi hai ..main china me nahi so raha main tumhare bagal e so raha hu
M : tum mujhse itna door kyu ho...ye bhi mujhe batana padega ?
V : Toh tum...

M :haan main sab jaanti hoon
V : To phir...(goes close ) :

what does she mean by

"haan main sab jaanti hoon"