It had started by accident. I was approaching 25 and I was fast becoming bored with my sex life. It would take 3 to 4 weeks before my girlfriend was even remotely horny and even then it would just be the same old missionary position. I had tried to spice things up with toys, new positions and lingerie but for some reason she never seemed to respond. So I started using porn a lot more, but again this fast became boring loo...