Kinky anal fisting makes my girlfriend squirt

It's rare for a woman to be so horny for anal sex. But once you get to know someone who likes it, she often needs it very hard in the ass. My girlfriend is such a woman. I have to fist her regularly hard with my clenched fist in the ass so that she is really satisfied. She loves it and it is so cool when she gets multiple orgasms, moans loudly and everything gets wet during extreme squirting. After the session, her tight asshole is really soft and worn out.