The term "Romance" comes from the Vulgar Latin adverb romanice, derived from Romanicus: for instance, in the expression romanice loqui, "to speak in Roman" (that is, the Latin vernacular), contrasted with latine loqui, "to speak in Latin" (Medieval Latin, the conservative version of the language used in writing and formal contexts or as a lingua franca), and with barbarice loqui, "to speak in Barbarian" (the non-Latin languages of the peoples that conquered the Roman Empire). From this adverb the noun romance originated, which applied initially to anything written romanice, or "in the Roman vernacular".

The word romance with the modern sense of romance novel or love affair has the same origin. In the medieval literature of Western Europe, serious writing was usually in Latin, while popular tales, often focusing on love, were composed in the vernacular and came to be called "romances".

-Parikshit Rampal

Romance languages are the continuation of Vulgar Latin, the popular sociolect of Latin spoken by soldiers, settlers and merchants of the Roman Empire, as distinguished from the Classical form of the language spoken by the Roman upper classes, the form in which the language was generally written. Between 350 BC and AD 150, the expansion of the Empire, together with its administrative and educational policies, made Latin the dominant native language in continental Western Europe. Latin also exerted a strong influence in southeastern Britain, the Roman province of Africa, and the Balkans north of the Jireček Line.

During the Empire's decline, and after its fragmentation and collapse in the 5th century, varieties of Latin began to diverge within each local area at an accelerated rate, and eventually evolved into a continuum of recognizably different typologies. The overseas empires established by Portugal, Spain and France from the 15th century onward spread their languages to the other continents, to such an extent that about 70% of all Romance speakers today live outside of Europe.

Despite profound influences (substratum) from pre-Roman languages (especially Continental Celtic languages) and from later invasions, the phonology, morphology, lexicon, and syntax of all Romance languages seem predominantly evolutions of Vulgar Latin. In particular, with only one or two exceptions, Romance languages have lost the declension system of present Latin and as a result, have SVO sentence structure to make extensive use of prepositions.

-Parikshit Rampal

Rumi, Hafez and Sa'di are icons of the passion and love that the Persian culture and language present. The Persian word for love is eshgh, derived from the Arabic ishq, however is considered by most to be too stalwart a term for interpersonal love and is more commonly substituted for 'doost dashtan' ('liking'). In the Persian culture, everything is encompassed by love and all is for love, starting from loving friends and family, husbands and wives, and eventually reaching the divine love that is the ultimate goal in life. Over seven centuries ago, Sa'di wrote:

The children of Adam are limbs of one body

Having been created of one essence.

When the calamity of time afflicts one limb

The other limbs cannot remain at rest.

If you have no sympathy for the troubles of others

You are not worthy to be called by the name of "man."

Psychology depicts love as a cognitive and social phenomenon. Psychologist Robert Sternberg formulated a triangular theory of love and argued that love has three different components: intimacy, commitment, and passion. Intimacy is a form in which two people share confidences and various details of their personal lives, and is usually shown in friendships and romantic love affairs. Commitment, on the other hand, is the expectation that the relationship is permanent. The last and most common form of love is sexual attraction and passion. Passionate love is shown in infatuation as well as romantic love. All forms of love are viewed as varying combinations of these three components. American psychologist Zick Rubin seeks to define love by psychometrics. His work states that three factors constitute love: attachment, caring, and intimacy. Following developments in electrical theories such as Coulomb's law, which showed that positive and negative charges attract, analogs in human life were developed, such as "opposites attract." Over the last century, research on the nature of human mating has generally found this not to be true when it comes to character and personality—people tend to like people similar to themselves. However, in a few unusual and specific domains, such as immune systems, it seems that humans prefer others who are unlike themselves (e.g., with an orthogonal immune system), since this will lead to a baby that has the best of both worlds. In recent years, various human bonding theories have been developed, described in terms of attachments, ties, bonds, and affinities.

Some Western authorities disaggregate into two main components, the altruistic and the narcissistic. This view is represented in the works of Scott Peck, whose work in the field of applied psychology explored the definitions of love and evil. Peck maintains that love is a combination of the "concern for the spiritual growth of another," and simple narcissism. In combination, love is an activity, not simply a feeling.

Noted psychologist Eric Fromm also maintained in his book "The art of loving" that love is not merely a feeling but is also actions, and that in fact, the "feeling" of love is superficial in comparison to ones commitment to love via a series of loving actions over time. In this sense, Fromm held that love is ultimately not a feeling at all, but rather is a commitment to, and adherence to, loving actions towards another, ones self, or many others, over a sustained duration. Fromm also described Love as a conscious choice that in it's early stages might originate as an involuntary feeling, but which then later no longer depends on those feelings, but rather depends only on conscious commitment

-Parikshit Rampal

Biological models of sex tend to view love as a mammalian drive, much like hunger or thirst. Helen Fisher, a leading expert in the topic of love, divides the experience of love into three partly overlapping stages: lust, attraction, and attachment. Lust exposes people to others; romantic attraction encourages people to focus their energy on mating; and attachment involves tolerating the spouse (or indeed the child) long enough to rear a child into infancy. Lust is the initial passionate sexual desire that promotes mating, and involves the increased release of chemicals such as testosterone and estrogen. These effects rarely last more than a few weeks or months. Attraction is the more individualized and romantic desire for a specific candidate for mating, which develops out of lust as commitment to an individual mate forms. Recent studies in neuroscience have indicated that as people fall in love, the brain consistently releases a certain set of chemicals, including pheromones, dopamine, norepinephrine, and serotonin, which act in a manner similar to amphetamines, stimulating the brain's pleasure center and leading to side effects such as increased heart rate, loss of appetite and sleep, and an intense feeling of excitement. Research has indicated that this stage generally lasts from one and a half to three years. Since the lust and attraction stages are both considered temporary, a third stage is needed to account for long-term relationships. Attachment is the bonding that promotes relationships lasting for many years and even decades. Attachment is generally based on commitments such as marriage and children, or on mutual friendship based on things like shared interests. It has been linked to higher levels of the chemicals oxytocin and vasopressin to a greater degree than short-term relationships have.Enzo Emanuele and coworkers reported the protein molecule known as the nerve growth factor (NGF) has high levels when people first fall in love, but these return to previous levels after one year.

-Parikshit Rampal