Arizona sheriff quits Romney campaign amid ex’s allegations, DOJ declines another marriage lawsuit, Tyler Clementi roommate trial begins, Whitney and Madonna top charts together again, Cheney lobbies for Maryland marriage, and more LGBT headlines.

Dick Cheney: Pro-marriage equality lobbyist. Before crossing the aisle as one of the votes in favor of Maryland’s proposed gay marriage bill on Friday, Republican Del. Wade Koch got a call from the former vice president (top photo), who’s long supported same-sex unions but never outed as actively lobbying for it.

U.S. Attorney General won’t defend ban on veterans’ benefits for gays. Following suit with its previous decision not to defend DOMA in court under President Obam’s orders, the Justice Department declined to take on a federal lawsuit fighting for military benefits to same-sex spouses of veterans.

Gay sheriff scandal forces him to quit Romney campaign. After being accused of threatening to deport his Mexican ex, Sheriff Paul Babeu (second photo) admitted he’s gay as he bowed out of Mitt Romney’s Arizona Committee. Throw in a newspaper outing with salacious texts and shirtless pics (photo), and you’ve got yourself a public frenzy. He says he’s staying in a GOP primary race for Congress.

Student punched in face over pro-gay editorial. Destinie Mogg-Barkalow, a lesbian student journalist at Bridgewater State in Masschusetts, says she was attacked for a pro-marriage equality opinion piece she wrote for the school paper.

Nebraska to debate outlawing local gay protections laws. State legislators are entertaining a bill that would overturn local municipalities that protect against discrimination based on sexual orientation and gender identity. How very Tennessee of them.

Rutgers spycam case heats up. As jury selection begins against the roommate of suicide victim Tyler Clementi, prosecutors face an uphill battle proving the case against the defendant on 14 counts including privacy invasion, bias intimidation and evidence tampering. He is not charged with anything to do with the suicide.

1996 all over again: Madonna, Whitney top charts together. It’s been 16 years since Whitney’s “Exhale (Shoop, Shoop)” and Madonna’s “You’ll See” saw the Top 10. Last week, “I Will Always Love You” was No. 7 and “Gimme All Your Luvin’” broke in at No. 10. (Bottom photo)

Annual Alabama vigil raises awareness of hate crimes. As they have each year since the brutal 1999 murder of 39-year-old Billy Jack Gaither, gay rights groups from across Alabama gathered in Montgomery on Sunday to push for an end to anti-LGBT violence and push for a gay-inclusive hate crimes law.

Cheney photo from Huffington Post; Babeu photo via Phoenix New Times; Whitney-Madonna photos from Billboard