Monsoon Vagina πŸ˜‚πŸ˜’ EDITED

I'm just trying to make sure I'm not the only one lol . Okay so this happens to me every time I have sex with my SO. We finish, I pee, I sit on the toilet for a while to let his cum run out of me,I wipe up with warm towel and dry down there AND I KID YOU NOT 5,10,15 MINUTES LATER MY VAGINA IS SOAKING WET!!! It runs all down my thighs and crack and I'm like where the hell was all this (pussy juice) when we were having sex??? (I'm not always wet I needs my lube) does this happen to anyone else and what causes it? Thanks