An illusionary state of mind held by one (or both if they're stupid) party of a relationship. A relationship that is viewed by their friends and family as "shakey", "bad", etc.

Retorts often used by these people are:

  • It's okay if s/he flirts with other people, I trust her/him.
  • S/he told me that was the only time they ever went behind my back.
  • I can't think of some more witty ones..sorry
which is always followed by: I am completely secure.

See also: relationships based entirely on sex, relationships based entirely on money, relationships based entirely on love