Ski Weekend with Cousin

When I was attending college in far northern Vermont I skied just about every weekend.   My cousin, Nancy, called me and told me that for her 18th birthday her parents said she could come up from Connecticut to go skiing with me.  That was a treat for me too, she's one of my favorite cousins. fun and cute. The ski area was just far enough from school that driving back and forth every day would take a lot of time out of our ski weekend so I booked a room in a cheap motel near the ski area.  We met there Friday evening.   We walked into the room and, yep you guessed it. One full size bed.  I said I was going to see if they had another room but Nancy said she didn't mind sleeping in the same bed as we had when we were small kids.   We brought our bags and equipment into the room and I broke out a few bottles of wine that somebody bought for me as neither one of us were legal drinking age yet.   I drove down the road for some pizza and we had a great night talking and joking.   She was a lot of fun.  It had gotten late when we decided that we should be getting some sleep so we could enjoy tomorrow.   I told her that she could use the bathroom first to get ready for bed.  She was going through her bag when she asked if she could borrow one on my tee shirts to sleep in as she hadn't brought anything. I threw her one and off she went to change.  I heard the shower run and a few minutes later she came out of the bathroom.  The tee was almost long enough to cover her ass and it clung to her curves.  That was the first time I really noticed her body and it was hot to say the least.  I could feel the stirrings of a hardon,  it was my turn to get ready so I just went in and washed, came back out and stripped to my briefs before jumping into bed.  I found out later that my hard cock hadn't gone unnoticed.    We said good night and turned off the lights but it wasn't really dark in there.  I managed to fall asleep quickly though.  Some time later I woke feeling movement in the bed.  Opening my eyes I saw her on her back, knees up  and obviously masturbating.  Her eyes were closed and she was under the covers but there was no doubt what she was up to.  I just watched for a while but my cock rose to the occasion and before long I had to stroke it.  I thought I was being pretty stealthy about it until she said "why don't we watch each other?" and kicked the covers off.  The shirt was up above her tits and her body was really nice.  One hand was pinching her own nipple, the other moving slowly between her legs.  I could hear her wetness.  I rolled to my back. lowered my briefs and started stroking but without taking my eyes off of her.  She was taking me in too and told me that she had never seen a guy jerk off.  She lowered the leg closest to me giving me a much better view.  She was nicely trimmed.  She was rubbing her clit a little faster now and asked if I would roll to her and cum on her when I was ready.  That did it, i was ready.   I rolled and started cumming at the same time and with the excitement there was lots of it.  As soon as it hit her stomach and arm she started cumming too.  Her hips rose up and she was cramming fingers into her pussy.   We laid there for a while,  not saying anything.  I just watched her tits rise and fall with each breath.  After a bit I told her I'd get a washcloth so she could clean up and she said "better make it a towel" and laughed.   I got a hand towel from the bath, wet it with warm water and was going to hand it to her but she wanted me to do it.  I got to feel that hot little body through that towel and hadn't gotten soft yet.  She then cleaned me up...with her tongue.  But that's another story.