Kylie Jenner says Jaden Smith is a supportive friend.The 'Keeping Up With The Kardashians' star - who is rumoured to be dating Jaden, Will Smith's 14-year-old son - has opened up about their special friendship, claiming they get on so well because he understands what it's like to grow up in the limelight.Speaking at the New York City premiere of Jaden's new film, 'After Earth', she told E! News: "He comes and supports me with everything that I do. It's refreshing. Some people don't understand and some people do.Â "And it's just great to have someone grow up in the same position as you and you can relate in that kind of way, so it's fun."Â The 15-year-old starlet also revealed her older half-sisters Kim, Kourtney and Khloe Kardashian have taught her and her sister Kylie, 17, how to deal with negative attention, advice which has come in handy now they're taking centre stage in the limelight.Kylie enthused: "Honestly, my sisters taught me when I was nine - when we first started the show - not to read it, not to listen to it. My family probably gets so much hate."I know we get so much hate, but we can't listen to it."Khloe recently refused to comment on the nature of Kylie and Jaden's "teenage" relationship, but admitted she was glad Jaden is such a good friend to her baby sister.She, gushed: "I will say, I'm kind of obsessed with Jaden. I think he's so sweet. But I will also say they're teenagers and I really can't keep teenagers straight. You just never know. Everything is up and down, but they're definitely best friends, I can tell you that."