Blake Shelton usually uses Twitter to poke fun at friend and fellow "The Voice" coach Adam Levine, shoot down media rumors, joke around with fans, or announce music news. On Friday, Shelton posted a serious tweet, honoring his late brother who passed away 25 years ago.

Shelton's brother, Richie Shelton, died in a car crash when the country singer was 14-years-old. The country singer posted a tweet saying Richie is still his hero.

At the 2012 Country Music Awards, Shelton's ex-wife Miranda Lambert won the award for Song of the Year with their hit "Over You," which Shelton helped write. The "Sangria" singer told the audience that the song was written for his late brother during their acceptance speech. In the song Lambert sang, "'Cause you went away/How dare you, I miss you/They say I'll be ok/But I'm not going to ever get over you."

"Later in life, when I decided I wanted to be a country singer, my dad always told me, 'Son, you should write a song about your brother.' I lost my dad in January, and it’s so amazing to me that tonight -- even after he’s gone -- he’s still right," Shelton said.

You can watch Shelton's full 2012 CMA acceptance speech below:

After dealing with a divorce with Lambert this year, Shelton has appeared to have made peace with the situation and moved on to another woman, No Doubt singer Gwen Stefani, who also coaches on "The Voice" with the 39-year-old.

Christina Aguilera, a former judge on "The Voice" who will return next year for Season 10, said she's happy to hear that Shelton and Stefani are dating, according to Us Weekly. Shelton and Stefani reportedly had some flirty moments off the screen of this week's filming of the NBC show.

"Divorce and life is hard enough! If you find someone who makes you happy, you gotta go for it. So they deserve it and they  deserve to be happy!" she said.