Celebrities and fans share a symbiotic relationship. But there are some celebs who prefer to stay aloof and away from the fan frenzy, while others have been more than generous in acknowledging and reaching out to their followers. On March 1, Harry Styles sent a heartwarming video saying 'I love you' to a fan battling leukaemia. The 21-year-old filmed the video for the New Jersey high school girl telling her how much he admired her bravery. "I've heard you're a little bit of a fan, and I just wanted to let you know that I am a massive, massive fan of yours. I've heard all about you, and know that you're very, very brave. I just wanted to send you all the love from me. I'm thinking about you and hopefully I'll get to see you soon. Take care. All the love. I love you. Bye." This isn't the first incident when a celebrity made that extra effort to reciprocate their fans' love. We point out a few more cases:

Beyonce Knowles

The singer singled out a 13-year-old visually challenged girl, Sophie Kotki, in front of thousands of screaming fans during her concert and asked the beaming teenager to join her in singing the hit track Irreplacable. The fan's elder sister, Ellie Kotkis, had apparently organised the special day for Sophie months in advance. "She's never really been able to go to a concert due to logistical reasons, but I just think someone as amazing as Sophie deserves to meet someone as amazing as you (Beyoncé)," the sister said.