A "sexual tryst" refers to a secret or private meeting or encounter between two people with the purpose of engaging in sexual activities. Full definition
Adult online dating site reports data security breach of member information --(Reuters)-- An online dating site for adults seeking sexual trysts has been hacked, potentially compromising the personal information of some of its 64 million members, the company said on Friday. (singlesdatematch.com)
online dating — «Online dating might introduce an insatiable appetite for variety and novelty — a constant desire for the next best partner, the next quick sexual tryst.» (singlesdatematch.com)
There are other less common configurations such as the partner who has a very low level of consciousness and engages in sexual trysts. (carycounseling.com)