NEW YORK: American musician John Mayer made a hasty departure from Pete Wentz’s art show, when he came to know that his ex-girlfriend Jessica Simpson was going to be there.

Mayer, who is currently dating actress Jennifer Aniston, had gone to Gallery1988 in LA to support Wentz’s art effort Without You I’m Just Me.

But he left early once he came to know that Simpson was going to attend the show.

“John showed up early for the public viewing and took pictures with fans, but left before the VIP portion of the evening started,” the New York Daily News quoted an insider as saying.

“He wanted to be there for Pete, but wanted more to avoid the possibility of a dramatic encounter with Jess,” the insider added.