Rings chase away preying singles from married people...True or False.

 Yesterday we started out with the big question, what does the 3rd ring in the set of a lady's ring denote? a friend said it's just for fashion.
Well, i think recently there has been much ado about the tiny 'handcuffs' we call 'rings' and i recently heard someone say rings would keep off preying singles from flirting with married men/female.
Do you think this is true? Feel free to express yourself here.