I keep picking up splits under my foreskin caused by a bit of a size mismatch between my cock and my gf's pussy (I'm 8 x 6). What's happening is that the tightness of her vagina is pulling my foreskin back and when I fuck her, it tears. I also hitting her IUD, which exacerbates the problem. I have had these splits on and off for all my sex life, but recently it's got worse and I've had them constantly for over a month. I'm in permanent agony. Abstaining from sex is a bit of a no-brainer, but more difficult than I imagined. She's continually horny and pressures me into fucking her, and I, with willpower that has the breaking strain of a kit-kat, always capitulate. Has anyone else suffered from or heard of this problem? Any ideas?