How to write a diary gift inscription for a significant other?

I’ve purchased a diary for my boyfriends birthday, as he likes to write. I would like to write an inscription on the front page, but I’m no good at getting thoughts into words. I’d like it to be short and sweet, and the message I’d like to get across is that the diary will be not only a place for him to dream, reflect and remember, but also a reminder that anything he shares with the pages, I hope that he may also feel safe to share with me if he needs to. (because I will always be here for him type of thing). So the diary is not only a private space for him to reflect upon himself but also a book to remind him that I am always here for him.. No idea how to write this thought out more cleverly and beautifully in a couple sentences. Can anyone help me possibly get a start or give me something I can work from?