Element and Quality of Libra
Libra is an Air sign, oriented primarily to the mental plane, and therefore their drive to be in relationship comes from an idea of the balance that comes from the interaction of two people rather than from an emotional need to be connected. Libra likes the idea of relationship – the sense of "we," the connection in partnership. Libra is a cardinal sign, so they are natural leaders and are oriented towards the principle of action, but the rulership of Venus ensures that they retain a sense of beauty and harmony even while they take charge. The phrase "iron fist in the velvet glove" was invented for Libra!