When my sister returned, Bill and I moved to her lounge. I started licking her pussy, while Bill played with her breasts. After a few minutes, we switched places. For the next twenty minutes, we pleasured Carol, giving her several climaxes. Sated, she relaxed in her lounge while Bill and I watched her chest rise and fall.
We spent the rest of the morning resting in the sun. When we felt overheated, we jumped into the pool. After lunch, Bill went to his office. I used my laptop to attend an online lecture.
Later in the afternoon, Carol took a nap while Bill and I sat by the pool, having a beer. He told me about a problem he solved for one of his customer’s networks. I mentioned the lecture.
“Bill, do you mind if I ask you a personal question?” I said.
Laughing, Bill said, “No, ask away.”
“Why are you and my sister doing what we’ve been doing? Why do you let her?” I said.
“I thought we told you,” Bill said.
“You said a few things while Carol was with us. I’d like to know how you really feel.”
“Matt, when your sister and I began dating, she was shy and unsure of herself. I helped her overcome her insecurities and realize she is a beautiful sensual woman. Once she got past her insecurities, she became insatiable.” Bill chuckled. “Sometimes it’s hard for me to keep up with her seemingly unquenchable thirst for sex.
“As far as letting her goes, what Carol does is her choice. I try to support her the best I can. When she mentioned you as a way to satisfy her curiosity, I agreed.” Bill smiled. “Carol says she would never cheat, but never is a long time. If fucking you helps to satisfy her curiosity, I good with it.”
Chuckling, I said, “I’ll do my best, Bill. As I said before, having sex with my sister was always a dream. Now it’s a dream comes true.”
“You know, Matt, we all have fantasies. Carol and I express them when we role-play. At times, your sister has a very vivid imagination,” Bill said. “You said you dated a few girls, but nothing serious. How many did you fuck?
“I’ve only had sex with two other women. The first time was at a party when I was in high school. I found out the girl would do it with almost anyone. The other girl I dated for a while. We went out for a few months, but I found out she was having sex with a few other guys. It wouldn’t have bothered me if she didn’t lie to me,” I said.
“Yeah, lying will destroy a relationship in a hurry,” Bill replied, then he smiled. “Did your girlfriend suck cock as well as your sister does?”
“Not even close. Carol is a pro,” I said.
“She’s a natural, Matt. The first time I asked her to blow me, she let me come in her mouth and swallowed. I’ve had blow jobs from other girls, but she’s the best. I think she likes sucking cock almost as much as she likes fucking,” Bill said.
Carol came outside with three beers. She sat with Bill and said, “So, what have you boys been talking about?”
“We’ve been discussing your cock sucking skills, baby,” Bill said.
Carol giggled, blew on her fingertips, and acted as if she was polishing them on her chest. “I love giving head.”