Role playing may involve the partners wearing costumes, to create and maintain a sexual fantasy.For variety, the partners can make up a (sexual) story together.
One of them starts with a sentence and then the other continues until the story becomes sexually explicit, and it provides an opportunity for the partners to express their sexual fantasies.
'Strangers for a day' is a role playing game which consists of the couple playing roles of the first meeting between them.
Depending on the context, the non-objection to a partner's advances may indicate that the sexual interest is reciprocated, as may a response to a kiss or hug.
The non-objection to the touching of an erogenous zone, or the taking off of an item of clothing may indicate reciprocated sexual interest.
In animal sexual behavior, the loose equivalent is sometimes termed 'precoital activity'.
Sexual desire is an aspect of a person's sexuality, which varies from one person to another.
Any act that creates and enhances sexual desire, interest, stimulation or arousal in a sexual partner may constitute foreplay.
An indication of sexual desire can be through physical intimacy, such as kissing, touching, embracing or nibbling the partner.
Sexual role-playing or sex games can create sexual interest.