Water washes away natural lubrication and can make sex feel dry. This includes sex in hot tubs, pools, bath tubs, rivers, lakes, the ocean and even the shower.
So contrary to what you would think, sex in water often requires adding sex lube. The best lubes for sex in water are silicone-based. Silicone-based lubes don’t wash away. Put the lube on a penis or dab some in a vagina before you get into the water.
Warning: Silicone-based lubes can make shower floors slick as ice. To help prevent dangerous slips, apply it before you get into the shower.