Aaron has a few interesting things to say in the ABC Bachelor website ..
http://abc.abcnews.go.com/primetime/...lor/diary.html
I think the fact that he had his mind set on Helene shows that she's the mysterious one that he told Gwen he was falling in love with. Also, from the diary it doesn't seem like he picked Brooke to "make it easier on himself." You never know!