John Mayer Speaks Out on Jennifer Aniston Split

John Mayer has opened up about his split from Jennifer Aniston -- insisting there no animosity between the pair.

"There's no lying, there's no cheating, there's no nothing," Mayer, 30, told reporters after working out at an Equinox Gym in New York's SoHo neighborhood Saturday.

"Jennifer Aniston is the smartest, most sophisticated person I think I have ever met," he said.

So what went wrong between the couple -- who have been inseparable since they got together earlier this year? "People are different, people have different chemistry," said Mayer, who appeared emotional, nervous and sad. "I ended a relationship to be alone, because I don't want to waste somebody's time if something's not right."

People magazine confirmed Wednesday that the duo, whose whirlwind romance began in April, mutually decided to split earlier this week.

Since the breakup, Aniston and Mayer have settled into their separate lives on different sides of the country.

Us Weekly magazine reports (in its latest issue) that the former Friends actress' romance with the No Such Thing hitmaker is "cooling off" after she expressed her need to have a life -- and baby -- with him.

"She's stating what she wants, and he's evaluating if he wants to go there," a source tells the mag. "He is so busy right now with his life and career. Who's to say where it will end up, but now he has a lot going on."