Brad Betrayed! Angelina's Secret Phone Calls To Lesbian Lover EXPOSED

Is Angelina Jolie switching teams again? As her marriage to Brad Pitt implodes, RadarOnline.com has learned that she's already called her lesbian lover, Jenny Shimizu!

Jolie was in a serious lesbian relationship with model and actress Shimizu in the late 1990s, and the two have remained close friends ever since.

"Angelina called Jenny this week to let her know what was going on and she told her that she wants to be a good mother to her kids," a source close to Jolie told RadarOnline.com.

As RadarOnline.com previously reported, among the many reasons that Jolie decided to leave Pitt, 52, after 12 years together, was that Pitt was allegedly drinking and smoking marijuana excessively.

"Angelina is telling all her friends that she would not allow her kids to be raised in an unhealthy environment," a source close to the situation told RadarOnline.com.

Shimizu, 49, has since gotten married herself, to socialite Michelle Harper. Harper declined to comment when reached by RadarOnline.com.

But she has nothing to be afraid of: Not only are Jolie and Shimizu just friends, but also, said the source, Jolie is reaching out to lots of other lovers, too.

"Angelina is seeing her part in things now and she is just trying to make amends with people she loved throughout her past," the insider added. "She was certain that she made the right choice by leaving Brad and is not second-guessing herself at all."