Shared a changing cubical with sister at pool

I have been to visit my sister at uni this weekend, and things happened...
I arrived late on Friday, and they were about to head out, so I dropped my bag and went out. They got me kinda drunk as I struggled to keep up. I got introduced to the friend's sister, and wow she is cute, such a pretty face, and a hot bod to match, kinda young looking tho. We hit it off, both out off our depth, but nothing happened. When we got home my sister said I could sleep on the sofa, but the living room had people in it so she told me to go in to her room. In there I wasn't sure what she meant so I got in the bed, in my boxers. She came in a little later and got undressed, I think she thought I was asleep, but I watched her get naked, slip on some fresh ** and a mighty and get in the bed with me.
In the morning when I awoke, she was curled up with her back to me, myhand kept touching her **, but she didn't seem bothered. I rolled on my side and spooned her, no objections. I was hard now, and my ** was pressing up against her. I moved to pull her nighty up a bit, but as I did she grabbed my hand, and pulled it up to her chest and snuggled in. I was clearly grabbing her ** and pushing my ** against her ** but nothing from her, she didn't seem bothered.
When we got up, again we both kinda got naked as we got dressed and got on with the day. Saturday night to follow...

Saturday....
On Saturday, there was pre drinks and some silly games, i-have-never etc. Anyway the sister, Grace, got a dare to kiss me, and she did, pretty passionately, and I was hooked. The game got rigged so that I had to kiss her as well, and after that she sat on my knee while I tried not to get hard. When it came to go out Grace said she didn't want more alcohol and might stay behind, and would I want to stay behind with her. I said yes, and immediately people assumed we wanted to be alone for ** and joked about it. As soon as the door closed Grace kissed me, and my hand went straight on her cute **, and slowly I worked my hand under her skirt. Clearly it was happening, so we went in to her sisters room, and we were awkwardly pulling each others clothes off. In just underwear she said this was only her second time, and I knodded and said mine too, I don't know if either of us was telling the truth.
I didn't have a condom, but we found one of her sisters. I was so amazed by her naked body and just wanted to touch and kiss her, but I got a feeling she was actually pretty **. We had what I thought was amazing **, but it was probably awkward, bad **, but we were both so up for it, we were happy and both came which was great. We left a bit of a wet patch we tried to clean up, kissed a load more and were still all over each other. I know very little about her, not even her age, but she is amazing . When everyone else got back to follow.....

When everyone else got back.
As it got later Grace broke the news I couldn't sleep int he same bed as her because she was sharing with her sister, so I picked up my clothes and went back to the other room and fell asleep.
I got woken up by my drunken sister who came in, took off all but her ** and got in to bed.
Again she had her back to me, but when she realised I was awake, reached back, I think for my hand, but touched my ** and **. Oh, she exclaimed, but then whist cupping my ** and ** asked me if me and Grace had had **, I said yes, and she said, told you it would be a good weekend. By now I was hard again, so she pulled her hand back and went to sleep.
In the morning I woke up with an **, and seeing my sister with her back to me, I pulled into a spoon again. Again she pulled my hand up to her chest, but I got to feel her bare ** this time.
When we both woke up a bit more, she turned a little and released my hand. I started feeling her body, and got down to her legs and up her inner thigh. I touched her through her **, then went to slip my hand inside. She turned, so I couldn't put my hand in. Facing me, she started to run her fingers up the shaft of my hard **, whilst saying, don't you think you should keep this for grace. Then running her hand up and down my shaft, she asked if I wanted her to go see if grace was free before she had to go to the station.
I knodded, so my sister got up, through on a dressing gown, went out the room and came back with grace in her PJ's. My sister left, and grace got in to bed without questioning why I was naked and hard in my sister's bed. We had great ** again, grace on top, her pert but very small ** bouncing as she rode me. What a fantastic weekend. Only just made the train.

Strange mixed messages from sis, but grace was just wow.

Sounds like a fun weekend! But when your sister asked you if wanted grace, you should of said no because I got you here! Are you scared to have ** with your sister?

To be honest, if it hadn't had been for grace, and my sister had been willing I think I may have but everything aside and slipped it in

I may have just jerked off to an old picture of my sister in a bikini. I feel so bad now.

Nothing wrong with that

Thanks, but felt wrong

Why??

It sounds like your sister is very comfortable with you and that's a good thing. Every brother and sister have different boundaries and it's up to you two what those boundaries are. I am very close to my sister and we've had ** many times. We are very happy with how we are as brother and sister. Everyone has different opinions on siblings and how close they should be, but you should decide for yourself.

What the duck dude. That's definitely pretty ducked but I'm really not sure what to suggest. If it was me I would just never speak to her again in order to save ones dignity and a stable relationship but it depends on you. I could also imagine how one could simply go with and see where it takes you. Know this however: women are not as completely retarded as they would have us believe. They are always talking with their friends and plotting it seems. Anyway, pretty out there story really.

I don't think I could just never talk to her again, that might just be a bit of an over reaction. Maybe uni made her body comfortable. Maybe it was a joke at my expense, see how uncomfortable I was. Could be anything really, but certainly a big surprise.
She has said she is going swimming again tomorrow, and I can tag along if I want. Mixed thoughts there.

Me again. yes, I think I may have overreacted in the beginning. given much thought since then, I just might go again with her just to see what comes of it. Im not sure there is much that can go wrong really

I think going with it is the best plan and like I said before she is obviously comfortable with you, so just relax. If you two get naked again don't turn around let her see you full frontal, even if you have an **. Be completely open with her and be brave! If you're lucky this could be the start of something special. Sibling ** is hot!

I, or we, ar just back from the pool. Not as busy as before, but she was weirdly happy to share again. Knowing what was happening made me even more nervous but I'm not sure it showed. Once again she got fully naked, no attempt whatsoever to hide it. Expecting it this time I took the opportunity to have a good look while she wasn't looking me in the eye, and took your advice to be confident and not hide. I think the combination of the two maybe backfired, as I was basically sporting a half mast election, which went full flag pole as she noticed it.

She smiled with a little giggle and carried on. What does that mean. Was she smiling because she liked what she saw? Or because she made that happen? Or was she just laughing at my **? Maybe she's seen much

She laughed again when we came to leave the cubical and my shorts were still a teepee. But that was quite funny. I said I couldn't go out to the pool like this, and she said 'do something about it then'. What was I mean to do, chop it off, rub one out??
All she said was try not to get us thrown out.

After we got out, back in a cubicle, the same thing happened and I got similar comments from her, followed by, 'why can't you take your clothes off without getting an **?'. 'I can' I said, just not round a naked girl, sorry. All I got was a raised eyebrow and a smile.

She is going back to uni on Sunday, she came home for a week as her two main lecturers cancelled lectures (half term maybe). Anyway should be the end of it, but what does it all mean. Please help me to interpret.