John Mayer and Jennifer Aniston attend the 2009 Vanity Fair Oscar party hosted by Graydon Carter at the Sunset Tower Hotel on February 22, 2009 in West Hollywood, CA.Us Magazine"This heart didn't come with instructions," he posted on Monday.
Mayer's heart has been all over the place during his time with Aniston, 40: They broke up two times in 13 months.
See Jen and John's most romantic moments
In August 2008, they first called it quits. At the time Mayer blabbed about the split to paparazzi outside his NYC gym, stressing that he was the one who broke things off.
"I ended a relationship to be alone because I don't want to waste somebody's time if something's not right," he said.
Check out Jennifer Aniston's red carpet looks through the years
They got back together and even attended the Oscars together last month.
See Jennifer and John getting cozy at an Oscar bash
"You have to really be with someone that you know who has your back in that situation," he said of attending the show with her.
Alas, they split a short time later.
