There's a bit of push back from some fans, who brought up the fact she was dating Nagase Tomoya around that time too. Interesting to see the author (Komatsu Narumi) interviewed Suzuki Ichiro, and wrote about X JAPAN's Yoshiki and GReeeeeN...
Translation of the Japanese:
Some are saying they'd rather have read about Nagase/Ayu, and others are concerned that coupling is next on the "target list."
The work is apparently "fiction based on fact" that Komatsu had gotten from Ayu herself. Some are saying they're not interested in something that happened 20 years ago, or are concerned that Ayu is that much on the verge of losing her A-list status (having resorted to selling her personal life stories in a tabloid-like fashion).