Molecular dynamics simulations are performed to probe the molecular-level interactions between various ionic pairs in the reciprocal mixture consisting of equimolar amounts of the cations 1-ethyl-3-methylimidazolium [C2mim]+ and 1-n-hexyl-3-methylimidazolium [C6mim]+ and dicyanamide [DCA]− and bis(trifluoromethanesulfonyl)imide [NTf2]− anions. Any enhancement or depletion in these interactions is compared with those existing in equimolar binary mixtures [C2mim][C6mim][DCA], [C2mim][C6mim][NTf2], [C2mim][DCA][NTf2], and [C6mim][DCA][NTf2] and pure ionic liquids [C2mim][DCA], [C6mim][DCA], [C2mim][NTf2], and [C6mim][NTf2]. The simulation results indicate that the [C2mim]+ cation prefers to interact favorably with the strongly coordinating [DCA]− anion through enhanced hydrogen-bonding interactions, while showing no preferential interest towards the other anion in the reciprocal mixture. The average hydrogen bond lifetimes between [C2mim]+ cation and [DCA]− anion increases by a factor of two in the reciprocal mixture compared to that in the pure system. We find that the hydrogen bond lifetimes in the various systems have a direct bearing on the self-diffusion coefficients of the ions. Our results point to possibilities of tuning interactions between various species in reciprocal ionic liquid mixture by appropriately changing the cation and anion combinations.