Sex positivity suggests being open and accepting of all sexual preferences, partners, and activities (as long as both partner(s) are consenting). It recognizes that sexual expression is good and an important part of an individual’s lifestyle. It embraces various beliefs regarding sexual partners and lifestyles and encourages pleasure as an important part of sex. Sex positivity advocates that individuals practice safe sex and become educated about all topics regarding sexuality and sex, not just some. In addition, sex positivity denotes acceptance of each person as a unique individual, regardless of the individual’s gender or sexual orientation, and encourages everyone to learn about things that they are not familiar with in the hopes of lessening judgment and/or ignorance of any given sexual orientation, gender, lifestyles, or activities. Sex positivity signifies that one sees sex and all of its components in a positive light, not as something that is negative, frightening, or shameful.
— Talia, CSPH intern (via thecsph
More really cool takes on what it means to be sex-positive here