Miranda Lambert is still trying to figure out where her marriage to Blake Shelton went wrong, admitting she still needs time to grieve it.

In the same interview with Cosmopolitan that she said they gave marriage their “best college try,” Lambert acknowledges she still has some "really bad, long, lonely nights ahead.”

She also talked about how she would approach marriage differently the second time around, saying she wouldn’t do it just for the piece of paper or because that’s what’s expected once you hit a certain point in a relationship.

“I feel like it's not about it being a step in life,” she said. “It's not about a piece of paper or a diamond. It's the way you feel about somebody and the commitment in your heart."

While her ex has moved on with his The Voice co-star Gwen Stefani, Lambert is single and “still figuring” it all out now that she’s on her own for the first time in a decade.

"We were together for 10 years, married for four, were very quickly divorced, and are friends," she said. "I'm still processing everything and figuring out where to go and what happened. [Marriage] is a tough business.”