Step sister's creampie without a condom in nylon dress

Step sisters are always a source of trouble, especially when they're as hot as this one. I mean, she's beautiful, cute, and totally hot in her nylon dress. But the real problem is, she's not my sister. She's my girlfriend's friend, and she's been coming over to our place all the time. I don't mind, but my girlfriend does. She's been bugging me about it for a while now. So, the other day, when my girlfriend was out, I decided to have a little fun with her. I took her to the bedroom, stripped her down to her panties, and started fucking her. It was pretty hot, but then I started to worry about the condom. I mean, I don't want to get my girlfriend in trouble if anything goes wrong. So, I decided to skip the condom and let him cum inside her. It was definitely worth it, and she loved it.