Yes, she said so in a recent interview. She commented that she thought it was odd, how people think she's never been in a relationship.
I wonder if BoA wrote ONLY ONE out of her own experience?
Aside from "Hope" and "One Dream" (which is just a theme song, rather than an album track)...those are some really depressing lyrics. If this album reflects how BoA's really feeling at this time, that's pretty sad. I think she really needs some time off to relax and stop worrying about her career for a little while. Maybe she would gain a few pounds so she'd be at a healthy weight again. I feel sorry for her.