Hamilton, 27, said the couple are back together after the singer was angry when he spent a night partying with 10 girls, reported Femalefirst.
"Nicole and I are happy and together - we're back on. She trusts him 100 per cent and there are no issues," he said.
Scherzinger, 34, was said to be debating whether their relationship could continue after Hamilton ended a night out by hiring a 5,000 pounds penthouse for an after-party.
"Lewis seemed keen to reassure his friends that the relationship is anything but over. In fact, he was gushing about Nicole and seemed genuinely happy," a source said.