Storge

Storge (στοργή, storgē), also called familial love, is the Greek word for natural affection —such as the love of a parent towards offspring, and vice versa. Pronounced (store-gae)

In social psychology, another term for love between good friends is philia, the form of love between friends.

Extensiveness
Storge or affection is a narrow range word which can apply between only family members, despite what others may say. The family can include pets and owners, mothers and daughters, fathers and sons, brothers and sisters, cousins, aunts, uncles, grandparent...etc.

Thus storge cannot be used as a general term to describe love. It can, although, be used to tell one of a family you have a strong family bond, or connection. The Greeks recognized this bond, between family, and created a word fit for it.

Storge love
Some may say there is other ways to love one in storge form. But this is between a married couple, who are committed, and plan to have a long relationship together. Another interpretation for storge is to be used to describe a sexual relationship between two people that gradually grew out of a friendship —storgic lovers sometimes cannot pinpoint the moment that friendship turned to love. Storgic lovers are friends first, and the friendship can endure even beyond the breakup of the sexual relationship. They want their significant others to also be their best friends, and will choose their mates based on similar goals and interests – homogamy.

Storgic lovers place much importance on commitment, and find that their motivation to avoid committing infidelity is to preserve the trust between the two partners. Children and marriage are seen as legitimate longterm aims for their bond, while passionate sexual intensity is of lesser importance than in other love styles.

Advantages/disadvantages
Advantages of storgic love may be the level of how one loves their family and understands each other. Also, two people that are deeply devoted to one another can feel the intimacy that they share.