It was Christmas Eve, My girlfriend and I had took her sister out for a drink because she was broke. We drank a lot and when we got home my girlfriend Jo went straight to bed

Cath (her sister) sat on the other end of the couch watching TV with me, we weren't talking a lot but when I looked at her I thought she looked sad so I told her to come and sit next to me and she did and I put my arm around her shoulders

After a while I thought I was ready for bed as well so I turned to her said 'what do you want to do?' she looked back and said 'I want you to show me how to suck cock' seeing as I expected her to ask for a coffee, you can imagine my surprise

Cath was 19, long curly red hair, quite skinny with little boobs, very pale skin and as I was later to find, a perfect arse

Never being known to refuse, my pants were off in an instant and she got on the carpet between my knees. My cock was up instantly and she started licking and sucking the head. I got her to hold my balls and take it all in her mouth and then wank me while she sucked the head

I knew I was going to cum in her mouth if she carried on but I really wanted to fuck her now. So let me return the compliment. she sat back on the couch and took off her tights and knickers. Beautiful little pussy, lots of red pubes, I parted them and started licking. She came quite fat so I carried on 'if you keep doing that I will start screaming!!' and she did. I was worried she'd wake up my Gf

She took her skirt and top off and fucked her there on the couch, turned her over and fucked her some more. I thought hey she can do some of the work so I got sat her on me.

Some how we ended up on the floor with her on her hands and knees again and that arse looking at me, so i started fingering her bum, 'you are not going to put your dick in my arse' she told me...oh well worth a try

We ended up in a 69 where she sucked me dry. While we were clearing and cleaning up she told me this was a one off, but she had my cock in her mouth the next morning