Why can't I get wet?

Ky
I never really get wet. The only time I ever do is when my boyfriend is around me, which is only because I don't see him very much because we're long distance and when I do see him, just being in his presence turns me on. But, any other time, I just don't seem to be able to get wet. I can have an orgasm from my clit, by rubbing my clitoral hood over my clit with my knuckles. Usually, I would do this as a pre-mastsurbation thing to get myself going, because the orgasm that comes from this is very weak and it would help to get me wet. But lately, when I do that, it doesn't even get me wet at all. I will get wet a little bit after having an orgasm, but it's more of a watery-wet instead of like, slippery? I don't know what word to use. And the most recent time my boyfriend visited me, even towards the end of his visit he didn't get me very wet.. I hate it, I used to get wet so easily! Now I just wanna have an orgasm or finger myself or anything but it's too damn dry to ever do anything. And obviously, it's not because I'm not turned on.