Co-sleepingW
Co-sleeping

Co-sleeping is a practice in which babies and young children sleep close to one or both parents, as opposed to in a separate room. Co-sleeping individuals sleep in sensory proximity to one another, where the individual senses the presence of others. This sensory proximity can either be triggered by touch, smell, taste, or noise. Therefore, the individuals can be a few centimeters away or on the other side of the room and still have an effect on the other. It is standard practice in many parts of the world, and is practiced by a significant minority in countries where cribs are also used.

ConsummationW
Consummation

In many traditions and statutes of civil or religious law, the consummation of a marriage, often called simply consummation, is the first act of sexual intercourse between two people, either following their marriage to each other or after a short or prolonged romantic/sexual attraction. The definition of consummation usually refers to penile-vaginal sexual penetration, but some religious doctrines hold that there is an additional requirement that no contraception must be used.

Cruising for sexW
Cruising for sex

Cruising for sex, or cruising, is walking or driving about a locality, called a cruising ground, in search of a sex partner, usually of the anonymous, casual, one-time variety. The term is also used when technology is used to find casual sex, such as using an Internet site or a telephone service.

Free unionW
Free union

A free union is a romantic union between two or more persons without legal or religious recognition or regulation.

GropingW
Groping

In a sexual context, groping is touching another person in an unwelcome sexual way. The term generally has a negative connotation in many societies, and the activity may be considered sexual assault or otherwise unacceptable. Touching a consenting person's body during sexual activity, massage, or medical examination is not usually considered groping, though the term is sometimes used to include clumsy, selfish, or inappropriate sexual touching. Areas of the body most frequently groped include the buttocks, breasts, vulva and thighs on a woman, and the penis, testicles and buttocks on a man. Gropers might use their hands, but pressing any part of their body against another person can be considered groping.

Haptic communicationW
Haptic communication

Haptic communication is a branch of nonverbal communication that refers to the ways in which people and animals communicate and interact via the sense of touch. Touch is the most sophisticated and intimate of the five senses. Touch or haptics, from the ancient Greek word haptikos is extremely important for communication; it is vital for survival.

HugW
Hug

A hug is a form of endearment, universal in human communities, in which two or more people put their arms around the neck, back, or waist of one another and hold each other closely. If more than two people are involved, it may be referred to as a group hug.

Human sexual activityW
Human sexual activity

Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality. People engage in a variety of sexual acts, ranging from activities done alone to acts with another person in varying patterns of frequency, for a wide variety of reasons. Sexual activity usually results in sexual arousal and physiological changes in the aroused person, some of which are pronounced while others are more subtle. Sexual activity may also include conduct and activities which are intended to arouse the sexual interest of another or enhance the sex life of another, such as strategies to find or attract partners, or personal interactions between individuals. Sexual activity may follow sexual arousal.

InfidelityW
Infidelity

Infidelity is a violation of a couple's emotional and/or sexual exclusivity that commonly results in feelings of anger, sexual jealousy, and rivalry.

Living apart togetherW
Living apart together

Couples living apart together (LAT) have an intimate relationship but live at separate addresses. It includes couples who wish to live together but are not yet able to, as well as couples who prefer to live apart, for various reasons.

Maternal bondW
Maternal bond

A maternal bond is the relationship between a mother and her child. While typically associated with pregnancy and childbirth, a maternal bond may also develop in cases where the child is unrelated, such as an adoption.

Ménage à troisW
Ménage à trois

A ménage à trois is a domestic arrangement with three people sharing romantic or sexual relations with one another, and typically dwelling together. The phrase is a loan from French meaning "household of three". A form of polyamory, contemporary arrangements are sometimes identified as a throuple, thruple, or triad.

Online dating serviceW
Online dating service

Online dating is a system that enables people to find and introduce themselves to potential connections over the Internet, usually with the goal of developing personal, romantic, or sexual relationships. An online dating service is a company that provides specific mechanisms for online dating through the use of Internet-connected personal computers or mobile devices. Such companies offer a wide variety of unmoderated matchmaking services, most of which are profile-based.

Paternal bondW
Paternal bond

A paternal bond is the human bond between a father and his child.

Physical intimacyW
Physical intimacy

Physical intimacy is sensual proximity or touching. It is an act or reaction, such as an expression of feelings, between people. Examples of physical intimacy include being inside someone's personal space, holding hands, hugging, kissing, caressing and sexual activity. Physical intimacy can often convey the real meaning or intention of an interaction in a way that accompanying speech simply cannot do. Physical intimacy can be exchanged between any people but as it is often used to communicate positive and intimate feelings, it most often occurs in people who have a preexisting relationship, whether familial, platonic or romantic, with romantic relationships having increased physical intimacy. Several forms of romantic touch have been noted including holding hands, hugging, kissing, cuddling, as well as caressing and massaging. Physical affection is highly correlated with overall relationship and partner satisfaction.

PolyamoryW
Polyamory

Polyamory is the practice of, or desire for, intimate relationships with more than one partner, with the informed consent of all partners involved. People who identify as polyamorous may believe in an open relationship with a conscious management of jealousy and reject the view that sexual and relational exclusivity are necessary for deep, committed, long-term loving relationships. Others prefer to restrict their sexual activity to only members of the group, a closed polyamorous relationship which is usually referred to as polyfidelity.

Public display of affectionW
Public display of affection

Public displays of affection (PDA) are acts of physical intimacy in the view of others. What is an acceptable display of affection varies with respect to culture and context.

Relationships for incarcerated individualsW
Relationships for incarcerated individuals

Incarcerated individuals' relationships are the familial and romantic relations of individuals in prisons or jails. Although the population of incarcerated men and women continues to increase, there is little research on the effects of incarceration on inmates' social worlds. However, it has been demonstrated that inmate's relationships play a seminal role in their well-being both during and after incarceration, making such research important in improving their overall health, and lowering rates of recidivism.

Romantic friendshipW
Romantic friendship

A romantic friendship, passionate friendship, or affectionate friendship is a very close but typically non-sexual relationship between friends, often involving a degree of physical closeness beyond that which is common in contemporary Western societies. It may include, for example, holding hands, cuddling, hugging, kissing, giving massages, or sharing a bed, without sexual intercourse or other sexual expression.

Physical intimacyW
Physical intimacy

Physical intimacy is sensual proximity or touching. It is an act or reaction, such as an expression of feelings, between people. Examples of physical intimacy include being inside someone's personal space, holding hands, hugging, kissing, caressing and sexual activity. Physical intimacy can often convey the real meaning or intention of an interaction in a way that accompanying speech simply cannot do. Physical intimacy can be exchanged between any people but as it is often used to communicate positive and intimate feelings, it most often occurs in people who have a preexisting relationship, whether familial, platonic or romantic, with romantic relationships having increased physical intimacy. Several forms of romantic touch have been noted including holding hands, hugging, kissing, cuddling, as well as caressing and massaging. Physical affection is highly correlated with overall relationship and partner satisfaction.

White DayW
White Day

White Day is on March 14, one month after Valentine's Day, when people give reciprocal gifts to those who gave them gifts received on Valentine's Day. It began in Japan in 1978; since then, its observance has spread to several other Asian nations.