Sexual desires

Okay so, I lost my virginity at 16. I was engaged and very happy. The guy left and moved across the U.S. I was abstinent for 3 years. I used to have a very out there sexual appetite, but now if Im not teased or played with in a certain amount of time, I lose all sexual desire. The last time I had sex, was over a month ago. My boyfriend tries to tease me and it does nothing. I just have no sexual desire. I don't masturbate. I get bored. I'm not sure what to do. It's my own issue, he has a high sex drive. I just have none at the moment... Open to suggestions or ideas about reawakening my sexual demon. I know why I have the issue. But I'm not sure how to retain my sexual desires.