It’s over for Kelsea Ballerini and Morgan Evans.

The “Heartfirst” singer, 28, filed for divorce from the “Kiss Somebody” musician, 37, on Friday after nearly five years of marriage, court documents obtained by PEOPLE show.

“They’ve been working on their marriage for a very long time. Prior to this they had separated privately once before and have been in therapy for several years,” a source tells PEOPLE. “They gave it their best go but unfortunately arrived at the decision to formally separate.”