Social intelligence is the ability of manage and improve one's relation with others which can lead to better joint performance in a group. Social intelligence can improve agents' interaction in a multi-agent system. Negotiation is a multi-agent system in which agents are cooperating to reach a joint agreement as well as gain more individual utility. This situation has great potential for conflict between social and individual goals. In this paper, in order to compromise to reach both social and individual goals, emotional-social agents are proposed to manage negotiation interactions. Experimental results show that emotional-social negotiator agents reach fair agreement, and also achieve more individual gain.