Twisted Games by Ana Huang from her twisted series.
By far it is a common romance more accurately a sadistic story between two opposite genders, two characters namely Bridget a crown Princess and Rhys her bodyguard, which starts with their stubbornness and ended up with a happy ever after marriage after her getting crowned.
Firstly the English writers need to understand the difference between loving and spoiling a partner in a bed it can't be considered just same well no offense but love shouldn't be portrayed as a sadism.
First half was quite slow i dragged myself anyhow to read further and ended up enjoying it. There were no twisted twists as it was very predictable. I liked it anyways.