[M4F] Anal sex as birth control when you're ovulating
I like the idea of having a girlfriend/FWB/mistress that doesn't use like to use traditional birth control. We have strict rules to prevent pregnancy, it's simple when you're in the fertile part of your cycle your vagina is off limits. Over time the climax you have from anal sex during ovulation has become more addicting than when I cum inside you on your infertile days.
Maybe the temptation still lingers, the ache between your legs. Your womb throbs when you ovulate, aching for semen you know you shouldn't have. Your womb screaming to feel full and fertilized.
All it takes is one time, one slip up for things to go wrong. Maybe we know it as soon as you feel me cum with my tip against your cervix, that was a dangerous one. Your eyes rolling back in your head as you feel the inside of your womb filled with my semen. You know my sperm is swimming inside you now, your egg ready to be fertilized.