Let $A,B\subseteq \mathbb{N}$ be infinite sets such that $A+B$ contains all large integers. Let $A(x)=|A\cap [1,x]|$ and similarly for $B(x)$. Is it true that if $A(x)B(x)\sim x$ then$$A(x)B(x)-x\to \infty$$as $x\to \infty$?