Chris Brown's has hinted his new music is about his ex-girlfriend Karrueche TranThe 23-year-old singer - who recently reunited with Rihanna despite still being on probation for beating her in 2009 - has admitted a lot of his new music was inspired by a former love interest, believed to be Karrueche Tran, who he dated on and off for a year.Chris told MTV News: "The song and the album title 'X' has a couple different meanings. It can refer to an ex-girlfriend, in terms of you always look forward to moving forward from."It's also about being a reject in a sense. In me being myself, being able to grow up, me not always hanging around the right crowd or doing the right thing all the time -- it's me saying, 'I'm over it. I'm past the bulls**t now."The 24-year-old model dated the 'Don't Wake Me Up' hitmaker, who she has a clothing line with, before he left her in October 2012 to reunite with Rihanna.Chris revealed earlier this week that he thinks about having a "perfect" family with the 24-year-old 'Stay' singer in the future.He told Ryan Seacrest on his KIIS-FM radio show: "It's in a part of my brain, definitely. Right now I have a lot more people to take care of as far as my family, as far as inspiring artists I'm working with. Everything I'm doing now is focused on me giving back."The family is there. It's going to be what it is. It's going to be perfect. Hopefully that's in the future and I can wait it out."