Valentine's Day is just around the corner and my boyfriend has a special surprise for me. He's arranged for his friend to come over and they've both been dropping hints about what's going to happen. I'm not sure what to expect, but I'm excited. When his friend arrives, we head upstairs to the bedroom. Things get intense quickly as his friend starts undressing me and kissing me passionately. I'm enjoying it at first, but then I realize who his friend is - my stepdad! I'm completely shocked and try to stop him, but he's too strong and persistent. He's clearly been wanting me for a long time. I try to fight back, but he's too big and powerful. He takes me from behind, his large cock filling me up. I'm crying and trying to push him off, but he keeps fucking me. This is so wrong and yet, it's also kind of exciting. I don't know what's going on with me, but I feel a mix of pleasure and guilt.