^ to be honest you rarely see people repeating how they love/like something all the time
Anyways, as someone said Ayu isn't that innocent and I'm sure she could write about sex if she wanted to and it's not really like she didn't as you can pretty much see that my name's WOMEN, Sparkle, ourselves and a few other songs have some pretty obvious sexual/physical references, of course I don't think she should ever do a typical sex song with loads of meaningless English phrases such as "boy you're so fry" xD