Miranda Lambert released her new single "Vice" on Monday, her first song since divorcing husband Blake Shelton. The song's lyrics speak about "heartbreak" and being "numb" and "lonely."

"Maybe I'm addicted to goodbyes," Lambert says in the track. "Sweet salvation on a dining room table / Waiting on me, where the numb meets the lonely / It's gone before it ever melts the ice... Another call / Another bed I shouldn't crawl / out of at 7 a.m. with shoes in my hand / Said I wouldn't do it, but I did it again / And I know I'll be back tomorrow night."

Lambert also hinted at some drinking in the song, which she co-wrote with Grammy-winning Nashville songwriters Shane McAnally and Josh Osborne.

Lambert and Shelton dated for six years before getting married. The two announced their divorce last July.

While the reason for the split was unknown, the two were surrounded by several cheating rumors. Most recently, infidelity allegations resurfaced with OK! Magazine reporting that Lambert owned up to her friends that she was the real reason behind the breakup.

A source told the magazine that Lambert has been “wracked with guilt for a while” over her rumored infidelities, and “thinks that alcohol played a part in her behavior.” The source also said that Lambert “really wants Blake to know she’s sorry” and “doesn’t want to hold him back.”

However, Gossip Cop debunked the report.

After Lambert and Shelton's split, the two moved on with their lives as the latter started dating Gwen Stefani while the "Little Red Wagon" singer got involved with Anderson East.

Lambert "is extremely happy and content with how her life is proceeding," a source told People magazine in March. "She's having a great time living and working within a creative community."

On Sunday, Lambert celebrated East's 27th birthday, captioning a photo of them kissing on Instagram, "Happy Birthday to my favorite 'Bama' boy!"

Listen to Lambert's "Vice" here.