Lewis Hamilton has offered a rare glimpse into his relationship with Kim Kardashian and admitted he ‘loves’ spending time with her four children. The pair have been romantically linked since February, and have since gone Instagram official.But the Formula One legend spoke about his relationship with the reality TV star in a rare moment at this week’s US Grand Prix in Austin.During a panel event at Circuit of the Americas, the Ferrari driver said: ‘My niece and nephew always gave me a lot of happiness.’My girlfriend’s kids, I love spending time with them,’ he added, referring to North, 13, Saint, 10, Chicago, 8, and Psalm, 7.’She’s got four, so I’m getting to play with these kids. I got them a dog this year, so little Halo is a new member of that family.’ Lewis Hamilton has revealed he ‘loves’ spending time with Kim Kardashian’s four children Hamilton offered a rare glimpse into their romance during an event in Austin this weekend Kardashian exuded glamour as she strutted out of the Bulgari Hotel in Rome on Friday nightKardashian, who shares her four children with ex-husband Kanye West, has been to support Hamilton at some races this season but skipped Sunday’s race in Austin because she’s in Rome celebrating her 46th birthday with mom Kris Jenner.It comes just days after Kardashian admitted she is ‘really, really happy’ with how their romance is going during an episode over her reality show.Kim made the coy admission on The Kardashians and revealed the iconic driver meets every requirement on her famously demanding relationship checklist.The star discussed a list of more than 50 qualities she wanted in her ideal partner, before suggesting she had finally found someone who fulfilled them all, while speaking to comedian Nikki Glaser, 42, on the set of their film The Fifth Wheel.When producers pressed her to reveal more about the mystery man, Kim said: ‘Oh, you guys are really trying to get this out of me.’She added: ‘Let me just say this – I am just really, really happy. That’s all I’ll say for now.’Since going public with their romance, Kim has been seen supporting Lewis at his Formula One races across the globe.The couple also took a trip to Japan earlier this year, and they are said to have spent a weekend at luxury hotel Estelle Manor in the Cotswolds, and visited Paris – the ‘city of love’ – in February too.In the same month, they appeared publicly together at the Super Bowl, when they were shown on the stadium’s big screen during the game between the New England Patriots and the Seattle Seahawks.Lewis – who has previously been linked romantically with singer Nicole Scherzinger, 48, and actress Sofía Vergara, 54 – and Kim had known each other for several years prior to their relationship.