Question about Koda Kumi's boyfriend

[taskinillusion]

I'm sorry if this has been asked and answered before, but I was curious if anyone knew who Koda Kumi's boyfriend is. I've heard that she does indeed have one (and her latest song "Ai no Uta" was supposed to be "for the one she loves"), but no one has mentioned who he is. Of course, that may be due to the fact that he's just a normal guy who doesn't have any fame or anything, but I was just wondering if anyone knew anything about him. Thanks!