12/28/2011 10:50 am ET Updated Feb 27, 2012

Steven Tyler Engaged: Family Members Disgruntled At Surprise Engagement

Shortly after Erin Brady, girlfriend of Aerosmith frontman Steven Tyler, flashed a sizable diamond ring on her hand while in Maui on Christmas day, rumors of disgruntlement among Tyler's family members are being leaked to the press.

TMZ reports that Tyler's family were unaware of the alleged engagement and are no fan of the 38-year-old Brady, who has been dating the 63-year-old "American Idol" judge since 2006.

Among the reasons cited are that Brady is "just not nice" and has been "mean to the family."

The alleged engagement would be the third marriage for the rocker, who recently told Oprah Winfrey on the OWN channel that he was "ashamed" of his womanizing past. Holding hands with Brady, Tyler appeared earnest about turning a new leaf and said it was possible for him to be monogamous.

"I don't want to hurt anybody again. For all the divorces I've had, I've hurt those girls deeply. There was some behavior that I'm ashamed of and I shouldn't have done," Tyler said.

Check out Tyler and Brady's beach PDA from November below: