By DEEPI SIDHU, SportsRadio 610

HOUSTON (CBS Houston) – Former Texan Mario Williams still has ties to Houston, but for personal reasons.  Williams, who signed a six-year, $100 million contract with the Buffalo Bills in 2012, had attorneys file a lawsuit in Harris County state district court against Erin Marzouki, described in the lawsuit as Williams’ former fiancé.

According to court documents,  Williams is seeking recovery of  a diamond engagement ring which is located in Houston.  Williams purchased Marzouki a 10.04 carat diamond engagement ring worth $785,000 which he presented to her on Feb. 19, 2012.  After Marzouki “unilaterally terminated” the engagement on January 21, 2013,  she refused to return the engagement ring as she had promised to do, according to the lawsuit.  Attorneys are also a seeking temporary restraining order and a permanent injunction preventing Marzouki or her associates from selling, damaging the ring, or keeping any proceeds from the sale of the ring.

Texas common law states that an engagement ring is considered a conditional gift but also is subject to an element of fault.  This means that the judge can decide who gets the ring based on which party is at fault for breaking up the engagement, boding well for Williams’ case.

According to etiquette queen Miss Manners, “laws of etiquette absolutely require you to return an engagement ring when the engagement is broken, for whatever reason, and by however nasty a fiancé.”

Williams was the first-overall draft pick of the Houston Texans in the 2006 NFL Draft.  He played with the Texans through the 2011 season, garnering 53 sacks in 82 games.