Caught her

So a couple of weekends back I ended out with one of my pals for few drinks then ende up back at his and smoked a few spliffs. His misses came down and sat for a while. She was just had a little pair of jammy shorts on and a loose top looking sexy as fuck. Anyway he passed out lying on the couch so me and her just sat and had a few more spliffs. Everytime she wasn't looking at the I was eyeing up her shorts when she lifted her leg a little I Cound see right in the side of them and getting a little glimpse of her unsaved fanny. I was pretty stoned by this time and could my dick getting a little stiff. She knew what she was doing.
She got up and walked across the room saying she was goin to her bed. I ended up just sat there myself for about 10 mins when I decided to to to the toilet. I wasn't sure what room it was so I just tried the first door and walked in. There she was lying on the the bed with her tits out and her shorts round her ankles rubbing one out.
She was really goin for it and olny seen me when I was standing in the room. When she seen me she quickly grabbed the covers and tried to hid herself but I had already caught her. I just stood there in shock she must have seen it in my face and burst out laughing. I just about turned and walked out the room done my piss and went back down the stair nothing happened. The whole week I've been thinking about her and wanking but last night I got a message on from her saying she was really embarrassed. I told her not to worry I wouldn't tell anyone but I couldn't stop thinking about it
Today she came over while he was at work.