Do any of you ladies have trouble staying wet after penetration? And if so, do you find yourself drying up because you aren't as turned on, or is it just a mechanical issue? My SO and I have great sex, but if we go more than 20 minutes she begins to dry up. Lube has alleviated that issue, but I have always been curious if other women have had that problem. All the other women I have been with were able to remain thoroughly self-lubricated for a lot longer.