She and her then-boyfriend had been dating for nearly three years before she agreed to share nude photos with him.
He created an private album on his Facebook account, accessible only to her.
The web content producer, who wants to be known only as Yul, recounts: "It was not something I was comfortable with.
"But he pleaded and pleaded and said that he wanted to capture the best shots of my body for his own private viewing.
"He even tried the emotional blackmail of 'If you love me, you would do this for me'."
She started out sending him photos of herself in semi-nude poses, which he told her was "good but not visually appealing enough".
Yul, 26, says he even attempted to take photos of her when they were together at either party's home.
"I refused. I didn't want to risk the photos landing in the wrong hands," she says.
By the time she wanted to break off with the man, who is a pub singer, she had shared some 100 totally nude photos with him over a year.
Yul says: "I regret it now because I feel so powerless - I don't know if he has downloaded the photos and kept them somewhere."
Then one day, she found some nude photos that another woman had sent him in a series of WhatsApp messages.
"That was it. I told him I needed time off to consider if I wanted to continue with our relationship, but he kept telling me that he had nothing to do with the woman.
"He insisted she was the one who wanted to send him the photos, but my point was, 'You did not delete them.'"
During their cooling-off period, she was shocked to learn that he had changed the settings of the album from private to public.
"A mutual friend, who had seen the photos, called to tell me about it. I was so embarrassed because the friend is a man and he was clearly telling me he had seen my nude photos," says Yul.
She confronted her ex-boyfriend, who claimed that he had no idea how the settings were changed. But he refused to do anything about it.
Yul says: "I had to plead with him. I begged him, I even wanted to kill myself, but he was unmoved.
"He kept telling me he would not do that to the woman he loves and that I should return to his side."