Why am i so dry?

Ive been with my partner for 5 years and i was on birth control for all of that time. We use lube everytime we have sex because i never seem to get wet even when im so into him and the moment. Ive come off birth control thinking this must be the issue but still no matter how long he focuses on me and how much im into it i cant stay wet without lube. Is this normal or.what can i try?