In my younger years, I'm ashamed to say that I wasn't all that comfortable with Same Sex couples. *bordering on disgust* I wouldn't be Bi today if some things in my life opened my eyes to the better parts of samesex relationships.
My first Yaoi was 'FAKE'. At the time, when my friend Crystal lended it to me, I was wondering what the hell to do. I wasn't all that interested in same sex pairings (I was in 7th grade and just starting to think on dating) and was actually against several pairings that I enjoy today. (Like Riku/Sora, Cloud/Leon and lots of others)
I began to read it after I got home and was surprised to find that it was good, and there was not that much heavy smut that I lost interest. It had a smooth flow that I think was the perfect entry for me to become a fangirl of Yaoi/Shonen Ai. ^_^ FAKE made me open my eyes to yaoi and I became steadily interested ever since.
Then I found gay/lesbian friends.