" closed loop "

 [ "closed loop relationship" ]

1: An intimate relationship of common understanding and agreement among three individuals, usually where two persons are married or similarly bound; where individuals may be heterosexual, homosexual, or bisexual; and, where all individuals remain faithful and exclusive to each other.

  * e.g.,  ... Unlike a ménage à trois, a closed loop relationship ("clr") is typically a long-term relationship that involves a third individual as a functioning, participating partner. Also unlike a ménage à trois, intimacy is not the sole motivation and serves as complement to the relationship. Individuals in a clr may live together, though this is not typical. At the fringes of a clr is the situation where one participant is a committed participant in another relationship, such as being married. 

 [ "closing the loop" ]

1: When you sleep with the original person that you lost your virginity to many years after having several other partners. This is in reference to the movie Looper.

  * e.g.,  ... Looper: Dude I had sex with my high school sweetheart the other day. I haven't hooked up with her in 6 years!!! Friend: Wow man! don't you think you're a little young to be closing the loop? 

 [ "closing the loop" ]

1: The act of sucking one's own dick.

  * e.g.,  ... After hours of diligent stretching I was finally successful in closing the loop, then my mom walked in. 

 [ "close the loop" ]

1: Finish what you started.

  * e.g.,  ... I haven't been able to close the loop with the customer about his letter of complaint.