The F1 driver is often off racing around the world and when Scherzy is busy jetting off too to promote her music, it can make it difficult for the couple to spend time together.
"It's not been easy," Lewis told The Sun. "At one point I flew to Asia for five weeks and couldn't see her."
He added: "I'm travelling... [Nicole's] job is shifting all the time, whether it's X Factor or Dancing With The Stars, Cats or music. So, juggling your schedule to meet with the other is very hard."
But, despite their hectic lifestyles, the couple are still going strong six years later and just recently Nicole headed to Abu Dhabi to watch Lewis win his second F1 world title.
Speaking about his win, Lewis said: "Having Nicole there at the weekend was special. People could see the depth of our relationship and the sheer joy we share together."
Cheering her man on as he crossed the finishing line, Nicole was clearly emotional and was pictured teary-eyed before planting a kiss on world champion Lewis.
Following his victory, the pair were then spotted with big smiles on their faces as they touched back down in London.
Earlier this month, Nicole moved to the capital as she prepares for her 12-week-stint in West End musical Cats.
And, despite her other half residing in Monaco, Lewis was on hand to help Nicole settle into her new home.
Looking like the perfect pair while stocking up on groceries, it seems absence really does make the heart grow fonder for Nicole and her beau.
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