Rule 11

If one believes there is likely a mutual interest between themself and another individual, that other individual is either already in some form of a relationship with another individual or will soon be.
"I thought we were clicking, but then I saw her boyfriend."

"Rule 11, eh? Good luck next time."
by bugmore November 23, 2013
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Rule 10

Any person that one thinks is interested in them, is not.
"Hmmm, I think she likes me. Oh, Rule 10..."
by bugmore November 23, 2013
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