A little over a year ago, a black friend of my moms called by to see her. She and my dad were out at the cinema, but even so I invited him in. To cut this very short, I was extremely horny before he rang the door bell as I'd been playing with myself in the bathroom. After flirting with him for five minutes, I asked him if he'd ever fucked a girl my age as an older guy (he's in his mid fifties). His very veiny thick black dong was fucking me ten minutes later on my dads comfy chair. He might be in his fifties but he fucked me for over half an hour straight, finally busting his nut up my well spread ass. Before he left I asked why he wanted to see my mom. In a vey casual way he said "To fuck her of course". I couldn't believe it, the dirty bastard had just cum up my ass and was now telling me if it wasn't mine, it would have been my moms ass. All throughout this year I've known my mom is getting laid by a black guy and from what I now know, she's probably loving every thrust of his big lack cock up her pussy and ass. I can't let her know I know, because that would mean I'd not get my share of his dick, so for the time being I'm sharing her black lover without her knowledge.