This is fucking wiild. Last night I was like...shocked and weirded out. Today though I'm getting more turned on the more I think about it. I came home at midday yesterday to shower before I went to a party and only my brother was home. He saw me and we said hi, just the usual. Told him I was going to shower and he said okay and asked me if I wanted him to order some lunch for us and I said yes. 5-10 minutes later, I turned the shower on and I guess my brother thought I was showering but I forgot my towel. So the sound of the water was running and I guess my brother thought I was in there.

I have to walk past his room to get a towel and right there, His back facing towards me (because his computer desk faces the other way) he had a picture of me from my 18th birthday loaded up, headphones in and he was listening to music and he couldn't hear me and he was stroking so fucking hard and fast.. to ME. I stood there for like 30 seconds just shocked. Then I got my towel, showered and we ate lunch together. I could barely look at him in the eye knowing he was just getting off to me, his own sister. He never showed me any signs before and he's significantly older than me (28). Not sure what to do from here. Thing is, while we ate lunch he wasn't awkward at all. It's like he jerks off to me all the time...wow.