Bill and Emma.

"I'll get it," I said, trying to mask the excitement in my voice.

"Okay, I'll just fix a few more things," my wife replied as I hurried down the stairs.

I opened the door and saw Bill and Emma, who was wearing a beige trench coat. "Hey, Bill. Hi, Emma. Come on in," I greeted them and stepped aside to let them come inside.

"Hey, Mike," Bill smirked at me and shook my hand.

"Hi, Michael," she replied, giving me a hug.

"Sam's upstairs. After you," I said, motioning them towards the stairs. I watched Emma's wide hips sway side-to-side as she climbed the stairs ahead of me.

"Emma!" Sam greeted her best friend at the top and the two women squeezed each other tightly.

"Sam, I can't thank you enough for this!" Emma cried.

"Anything for you, honey! I want you to share this happiness!" Sam took Emma's hand to touch the bulge in her belly.

"Hey, Sam," Bill coughed to remind her that he was there too.

Sam hugged him. "I'm so glad you agreed to this!"

"Well, a baby is very important to both of us," he replied, smiling at his wife. "I can't think of a better couple than you two to help us achieve our dream of being parents."

Emma started sniffling and my wife took her by the hand to lead her to the master bedroom.

"Oh my God," the buxom blonde gasped, looking around at our bedroom. "It's so romantic!"

"I want you to make a baby from love, otherwise we could have just used a turkey baster!" Sam smiled.

"Thank you, Sam." The blonde hugged my wife before looking at me. "Thank you, Michael."

"Don't thank me yet," I smirked.

"I guess we should give you two some privacy," Sam said, hugging her friend again before kissing me. "Be good to her, honey."

"Wait," Emma cried. "Where are you two going?"

"I guess to the guest bedroom?" Sam answered while she and Bill looked at each other for a moment. Even though we had swapped wives during our swinging days and I was about to have sex with his wife, I still could not help a pang of jealousy that Bill was about to fuck my pregnant wife.

"Why not stay here?" Emma suggested. "The bed is big enough for all four of us."

"Are you sure, honey?" Bill wondered. I'm sure he wanted to be alone with my wife as much as I wanted to be with his.

"I want you to be here when we make a baby," Emma answered. Clearly she was overwhelmed by the notion that she could be knocked up tonight after a couple years of trying.