  We consider in this work the electromagnetic current for a system composed by
two charged bosons and show that it has a structure of many bodies even in the
impulse approximation, when described in the light front time $x^+$. In terms
of the two-body component for the bound state, the current contains two-body
operators. We discuss the process of pair creation from the interacting photon
and interpret it as a zero mode contribution to the current and its
consequences for the components of currents in the light-front.
