I'm a huge fan of some of the slang terms used both in the past and currently with regards to dating and relationships, and love realizing how much I take for granted some of the words I use daily that might not make a lot of sense to someone not familiar with the English language, or even someone not familiar with regional variations. For instance, hooking up is an oft-used slang term, but the age of the person using it as well as where they live will determine what "hooking up" really means. For some, hooking up refers to having casual sex, others use it to define casual dating or friends with benefits, while for yet others it means merely spending time together.
Every subset of the dating world seems to have its own slang terms as well. Pickup artists use words like kino, avatar and peacocking, folks in the UK refer to sailor's elbows, relationship therapists are hearing words like umfriend, textationship and exing being used by their clients, and poly folks refer to slang terms like NRE, abundant love, and open relationships.
Do you have any slang terms that you use to refer to a partner, a relationship or a fling? What are they, and how did they get started?