Credit: Frazer Harrison/Getty Images Photo: Demi Lovato at the Premiere of Frozen in Hollywood, California on November 19, 2013

Demi Lovato may not have minded that ex-boyfriend Joe Jonas publicly aired their past relationship’s dirty laundry in his recent tell-all essay, but her big sister, Dallas, isn’t having it at all.

Demi lived our worst relationship nightmare earlier this week when Joe divulged some pretty big secrets about their time together. Besides sharing that Demi (with a little help from her twerkiest friend, Miley Cyrus) pressured Joe into trying weed for the first time — and bringing up that wonderful memory that is the time that Demi got caught “punching a girl in the face on a plane” before she hit rehab.

Oh, yeah, and he may have let it slip that he dated Demi out of the obligation to take care of her, although he felt he was “living a lie.” Ouch.

Despite all this, Demi didn’t hesitate to share her support of Joe on Twitter December 2, tweeting, “love you brother. #family/friendsforever.” 

All this means is that Demi is a far better person than we are, because if we had that many Twitter followers when an ex-boyfriend wronged us, we’d be putting Taylor Swift to shame.

And Demi’s sister, Dallas, seems to share the same attitude. “Pathetic how people cut others down to get attention off themselves,” Dallas tweeted. “Loser.”

Sources: Demi Lovato on Twitter, Dallas Lovato on Twitter, Gossip Cop