Bibliophile Princess by Yui Kikuta

Lady Elianna's entire world revolves around books. When Prince Christopher asked her to be his fiancée he promised her unlimited reading time. It seems like the perfect set up, but is this just a mutually beneficial deal or is there something more?

This was adorable! Of course the name of the series instantly drew me in but the cuteness kept me invested.

In the first volume Elianna believes that the only reason that Prince Christopher asked her to marry him is so he wasn't pushed into an agreement he didn't want. A few years pass and she had become comfortable in her fake princess role, but when a potential rival appears she finally confronts her own feelings.

There are currently six volumes out and I'm eagerly awaiting more. There is also going to be an anime adaptation on Crunchyroll that I'm really looking forward to it.