Tilly Ramsay and her Strictly partner Nikita Kuzmin have been getting on like a house on fire off-camera, it would seem - with the pro spotted at the student's London flat on Thursday evening. Tilly, 19, who is the daughter of chefs Gordon and Tana Ramsay, had been at training during the day, practicing their waltz - which they debuted on Saturday night's show. Nikita, 23, was seen arriving at Tilly's apartment, with the TikTok star letting him inside. Close: Tilly Ramsay and her Strictly partner Nikita Kuzmin have been getting on like a house on fire off-camera, it would seem - with the pro spotted at the student's London flat on Thursday evening 'Nikita was first and waited outside before Tilly arrived a few minutes later. They were grinning from ear-to-ear, chatting and laughing,' an onlooker told The Sun. 'They looked very comfortable in each other’s company, quite flirty. 'There is a clear physical chemistry. After strolling to the door they headed inside and stayed all evening.' Nikita, however, has a girlfriend, Nicole Wirt, who lives in Germany. Another show insider said: 'It’s no secret that Tilly and Nikita have hit it off really well. A lot of the older cast and crew think they’re really cute. Tilly, 19, who is the daughter of chefs Gordon and Tana Ramsay, had been at training during the day, practicing their waltz - which they debuted on Saturday night's show Nikita, 23, was seen arriving at Tilly's apartment, with the TikTok star letting him inside 'They want to stay in the competition as long as possible so it’s important that they get on and have a close relationship.' The pair left Tilly's mother Tana in tears on Saturday. She was spotted wiping her eyes after watching her daughter dance, while her husband Gordon wished Tilly 'good luck' on Instagram. Tess Daly told Tilly after the dance: 'That was mesmerising! You're the sweetest. I know you were nervous but you definitely didn't look it. And I think you've got a very proud mum in the audience - she's crying!' Stunning performance: Tilly Ramsay, 19, left her mother Tana in tears after she performed the Waltz with Nikita Kuzmin on Strictly's first live show on Saturday Gordon, who was absent from the live show, captioned a photo of her daughter and partner Nikita Kuzmin: 'Wishing these two the very best of luck ahead of tonight’s LIVE dance @tillyramsay @nikita__kuzmin @bbcstrictly. So proud of you Tills, love you from your dance coach extraordinaire Dad ❤️❤️❤️.' Dancer Nikita made his debut on the show performing the dance to Consequences by Camila Cabello with the budding chef. New judge and longest running professional dancer Anton Du Beke was impressed by her performance and dubbed it 'gentle, romantic, and sophisticated.' Emotional: Tana, 47, was spotted in the audience wiping her eyes after watching her daughter perform the dance Pride: Tess told Tilly after the dance: 'That was mesmerising! You're the sweetest. I know you were nervous but you definitely didn't look it. And I think you've got a very proud mum' Craig Revel Horwood, however, thought different and said of the dance: 'It lacked for me expression in the arms, but you told a v sweet story and it was believable and I appreciated that.' Motsi Mabuse simply said: 'You're off to a super start' while Shirley Ballas noted: 'I enjoyed the v small details, it was poised it was extremely mature, as with the footwork I don't know I'm looking at the same thing as I'm looking at and I thought you did a majority of the heel correctly. A job well done.' She earned herself a score of 21 out of 40 after her first dance. Sending best wishes: Her chef dad Gordon wished her 'good luck' on Instagram on Saturday Good debut: Nikita Kuzmin, making his debut on the show, and Tilly performed the dance to Consequences by Camila Cabello The series kicked off amid a Covid-19 crisis after two pro dancers were reported to have refused the vaccine, sparking chaos behind the scenes as some celebrities were reluctant to be paired with them. Dusting off their paddles were returning judges Shirley, 61, Craig, 56, and Motsi , 40, and Anton Du Beke, 55. Ahead of the launch of the new series, it was revealed that three professional dancers on Strictly Come Dancing have refused to get Covid jabs, leaving some contestants reluctant to pair with them. Amazing: She earned herself a score of 21 out of 40 after her first dance Dazzled: New judge Anton Du Beke was impressed by her performance and dubbed it 'gentle, romantic, and sophisticated' All rights reserved for this news site (dailymail) and under his responsibility