There is a study on love in psychology - Stenberg Love Triangle Theory
In this model, love has three main components: passion, intimacy, and commitment. According to these three points, Stenberg divides love between the two sexes into eight modes.
No love
If a love does not have passion, intimacy, and commitment, then there is no love. This relationship is like two strangers, and there is a casual, indifferent, and dispensable emotional state between each other.
Like love
Passion, intimacy, commitment, and commitment at a relatively low level, the feelings between two people are more in the state of friends, a simple love, because they get along relatively harmoniously and give people comfort and freedom when talking. Under certain standards, this state cannot be called love. If a person or two people develop stronger emotions over a long period of time, that is, love over time, it may make people wonder whether it is like or love, and they will be contradictory and entangled.

Feeling love
When getting along with the opposite sex, we will have a strong state of worship and obsession. The other party can give us strong passion and desire, as if we fall in love at first sight. Two people are attracted by strong desires, but they lack a certain understanding and trust between each other, and the two people have no promises. This kind of love is difficult to develop into a mature and long-term relationship.
empty love
barren love only has promise. When desire is low, passion is slow to rise. It is difficult to have a love experience. The level of intimacy is also dull and there are not many ripples. This is like the secular standard of not liking to each other, but just getting married because of the right fit, parents' arranged marriage, reaching the age of marriage, or continuing to live together for the sake of children.
Romantic love
When the relationship between two people has a high level of passion, desire and intimacy, and there is no need to make a promise to maintain it, it means that this is a free, relaxed, enjoyable and pure love. However, if there is no promise to support love, it will be difficult for most people to get married.

Illusory love
Two people lack intimacy, and have passionate desires and commitments when they get along. When a relationship is not intimate, or the two people do not have a certain emotional foundation, just like people who will leave at any time, their relationship is unstable. For example, two people who have just met have a good impression of each other and quickly get married, but lack a certain understanding and love, and the result may be a parting.
Partner's love
Long-term promised friendship, when the passion in the marriage retreats, the relationship between the two is sublimated into family-like dependence and trust. Most of this state of love is a long-term and happy marriage.
Perfect love
There is no perfection in the world, only close to perfection, this is a state of love that is difficult to have. When passion, intimacy and commitment coexist, the love experience of two people is close to perfection, based on trust, constraints, and passion as a catalyst. Such love is stable and long-lasting, romantic and energetic, and this state is difficult to maintain.
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