I have finally decided to open up. Ive been searching for answers but have found nothing. I hope to be able to have a mature conversion. I'll just cut to the chase. I seem to find my sister attractive. Not just pretty but sexually attractive. It's sort of been that way since I was a teenager but I'm 27 now and she's 30. Most information I find on the internet about this is people suggesting I must be from the south which I am not. I have a very close relationship with her and she is really the only person I would say I love. She is an affectionate person and every time I visit, I never leave without her hugging me. Last time I noticed I received an erection after hugging her. I would never act on any urges, but I feel absolutely worthless and disgusting to think this way but I just can't stop thinking about it. I know she must be an attractive person since she never has issues finding a boyfriend and always seems to get hit on. I guess I just notice she has a sexy body and is very pretty. It seems in Europe this is more normal but I just feel I have done something wrong. I feel guilt and shame. It's like another thing to a long list of things that's wrong with me. I've never had a girlfriend. I guess also it feels nice to have a female who isn't repulsed by me and is willing to hug me. I just don't know what to do. How do I suppress the thoughts?