The singer was due to fly to Dubai on Sunday to prepare to shoot scenes for 'The X Factor' on Monday (27.08.12) but persuaded show bosses to allow her to make a pit stop to see her lover in London.
A source told The Sun newspaper: ''Nicole was due in Dubai in plenty of time to Settle in before shooting started.
''But she begged for some quality time with Lewis. It meant she had to step off an overnight plane and begin shooting straight away. She must have been exhausted but she felt it was worth it to spend just a few hours with her man.
''They're obviously very much loved up once more.''
Nicole was recently left furious after her boyfriend was caught partying with 10 girls in his hotel suite and was said to be having doubts about their relationship.
A source previously said: ''Nicole's confiding in pals that she thinks it might be time to call it a day. It's a long distance relationship, he isn't ready to Settle down and they're both working non-stop - she's tired of fighting for it and feels it just isn't working.
''Nicole is so busy at the moment with promotional activity for her music on top of her role on 'X Factor'. It's really hurt her that she has to take on a new job while feeling so humiliated. She is furious he could be so disrespectful to her - and seeing as it was only a few months ago that they vowed to make a go if things after they split last year, she doesn't know whether she can face the heartache of trying to make it work any more. She's telling her friends that she doesn't think it's worth it. She hasn't wanted to speak to him for the past few days while she mulls it over.''
However, their latest tryst shows that the pair have managed to patch up their differences.