Cheater’s Ring

This cursed ring is made of gold and silver. With pleasing decorations making the whole seem to be worth 80 gp. However, when acquired in any manner other than as a gift, the bearer must make a DC 20 Will save or immediately become convinced that it is a perfect gift for a loved one, or, barring that, some worthy they wish to influence, such as a powerful noble or wealthy merchant.

However, the ring never fits the person it is given to.

If received as a gift, the recipient must make a DC 20 Will save or feel slighted by the gift, and seek to get rid of it by whatever means seem feasible (such as selling the ring). While the gifter may be able to salvage the relationship, the magic of this pernicious band is long-lasting, and some special quest (or series of quests) might be required to prove the gifter’s fidelity.

 

Based off this Facebook post.