A belief in free love is the belief that it is acceptable and good to have sexual relationships without marrying, often several relationships at the same time.
[old-fashioned]
free love in British English
noun
the practice of sexual relationships without fidelity to a single partner or without formal or legal ties
free love in American English
US
the principle or practice of sexual relations unrestricted by marriage or other legal obligations
Examples of 'free love' in a sentence
free love
Don't go adopting all those old views on free love to go with the shirt, will you?