Hollande was reportedly unaware Trierweiler was penning the 330-page book, entitled Merci Pour Ce Moment (Thank You for the Moment), about her time as France's first lady.
In it, she describes her reaction to seeing photos of Hollande with actress Julie Gayet that were published in January by French tabloid Closer, suggesting the two were having an affair.
"I am losing it. I don't want to hear this; I rush into the bathroom. I grab a little plastic bag containing sleeping pills."
Hollande reportedly took the pills away from her.
"He grabbed the bag and it split. The pills scattered over the bed and the ground. I managed to recover some of them. I swallowed what I could. I wanted to sleep. I didn't want to live the hours that would follow. I felt the storm that would break over me and I didn't have the strength to fight it. I lost consciousness."
Trierweiler then admitted herself to a hospital, where she remained for more than a week, citing stress and fatigue.
By late January, Hollande confirmed that his relationship with Trierweiler was over.
Despite the breakup, Trierweiler reveals that Hollande continued to seek reconciliation, for months sending her text messages.
"He said he needed me. Each evening he asked me to have dinner with him. He said he wanted to get me back whatever the price. He said he would win me back as if I was an election."
Trierweiler admits that she had suspected Hollande of infidelity the previous year, asking him in March and December 2013 to respond to rumors he and Gayet were having an affair. "I asked him: Swear on my son's head that it's not true and I will never speak of it again." Hollande denied the allegations and dismissed the rumors of his infidelity as "a load of nonsense."
As first lady, Trierweiler resided at the Elysée Palace for seven months. During that time, she described feeling neglected by Hollande and, the professional journalist adds, "as if I was on a reporting assignment."
"Everything I have written is true," Trierweiler asserts.