Natalie moved closer to me. We were currently both sitting on the floor next to the sofa.'Are you still ok with all this?' she asked softly. 'How abou... this Dave thing eh?' she smiled.'I don't want to do anything with him, but I wanna see what he thinks about how I look,' I said carefully. 'A guy's reaction would be interesting, it's good to know and to learn more about myself and all.''Lets get him round then!' Natalie said. 'We want a pizza anyway! He'll just come, deliver the pizza and go,. We keep going until we need to rest." Who goes first?" asked Emily.I wasn't going to let that debate happen again."Abigail," I said, instantly. "It's her place." Then who's next?" asked Gabriella."I don't know. We can figure it out as we go along. All I know is I really need to fuck someone!"I started to undress which spurred the girls to undress. Sometimes ... no ... often I couldn't understand girls whatsoever.I motioned a naked Abigail to her bed and I climbed on top of her."Yessss!" she. You never poked my ass before." You didn't like it? Seemed like you liked it. I thought your cum would shoot through my head." Oh it was amazing. Unexpected. Which is probably why I came like that. I was surprised, you're usually not the inventive type." The morning was so unusual, it just occurred to me to try it."I filed that one away for future reference, then eased back just a little and repositioned myself so I could slide my cock into her nice wet pussy. She felt so warm, I. “Okay, well, you will make the ‘rents happy,” I said.Simone was fidgeting next to me. I was missing something the three women instinctively understood.“Jim, we want you to be the bio father,” Tara said.This took me back a bit, but Lisa jumped in before I could recover.“It’s not just about you being Tara’s biological brother. I want my children to have the kind of father I know you to be. I could not think of a better man to father our children. We are only asking for a sperm donation,” Lisa.