So I’m always wet sometimes for no reason at all but lately I’ve noticed when i have sex and either we’re done or the penis slips out it’s dry.... what does this mean? I’ll check my vagina and it’s very moist so I’m confused.
Is his penis at least a little sticky? Sometimes the vaginal secretions, the watery kind, absorb into the penile skin giving the appearance of being dry. There is no worry but understand not only is he leaving body fluids in you, you are transmitting fluid to him. It's perfectly normal. Many times after I have ejaculated inside my partner I lay there for a few minutes savoring the result. When I withdraw I'm pretty dry but a little sticky. She's still sopping wet from her secretions and my adding semen to the mix. (Delicious!)
Then you have nothing to worry about as long as you can accept his cock without pain. If it hurts you, even just a little bit, add some good quality lubrication. Otherwise it's perfectly normal for him to be this way.
I find my wife to be very moist and wet, sometimes however, when I pull out, it dries faster then normal, (zero effect on quality of sex). We pondered the same question you posted. We did a little research and found that over all body hydration and time of month were the two big factors. When she is ovulating, her sexual discharge, feels thicker and more viscous. Perhaps that might be the answer your looking for. Btw I also second, it should never hurt to have penetration, so if its drying so fast your experiencing chafing, might want to add a little lube.