Pop star Nicole Scherzinger and Formula One champion Lewis Hamilton split off after a long strife over marriage issues.
The latest break-up marked the couple's many times separation during their seven-year relationship.
Scherzinger, 36, and Hamilton had been involved in an argument over the issue for months and things just got worse by time.
"They've been fighting for months but things had got much worse. She finally had enough. Nicole knew Lewis had no plans to marry her, she's completely gutted and feels lost about her future," a source said.
Though neither Scherzinger nor Hamilton has addressed the break-up report, it was alleged that the Formula One champion's last Instagram post with the pop star was over the New Year.
Scherzinger and Hamilton first went public with their relationship back in 2007. They briefly separated in 2010 and reconciled soon thereafter. The couple separated again the following year and got back together again in 2012. In mid-2013, they called it quits once again, only to reconcile last February.