'The X Factor' judge spoke about her on/off partner the day before he was exposed for taking ten girls back to his hotel suite.
The former Pussycat Doll said she believed that ''trust and communication are key''.
She told Britain's Cosmopolitan magazine: ''You have to love yourself first before you can expect it from someone else.
''And trust and communication are key ... me and Lewis are from similar upbringings so we share a similar outlook. We're kindred spirits and hearts - that's what ultimately connects us.''
Nicole continued: ''Ultimately, you want to be with someone you can be yourself around. My grandma taught me the person you want to be with isn't going to be Prince Charming.
''It's going to be the person you're able to work on a relationship with. It's always a work in progress, like everything.''
She added: ''I definitely have that tradition In Me where I want to take care of my guy. I saw how much my mum enjoyed taking care of her family and I have that nurturing gene.
''But you need balance. I work hard and I'm an independent woman. It's important to be in control.
''I'm probably in one of the best places of my life. Life gets easier the more you've been through. I wasn't able to always enjoy things because I worked too hard.
''Now I'm able to enjoy life, it's awesome. And I have so many things I still want to accomplish. I always say, 'I'm just getting started'!''
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