Am I gay?

I came to this sub to talk about my sister, but now I have the same question...<br><br>I'm 20M, I had a crush on a girl who is 18F, we did a little bit of sexting, nothing serious, until I found out that we are related. When I was a little kid I was told I was a pure child of Christ (Catholic), but it was not until I started sexting that I found out the truth. I'm not sure if I'm gay, I can't help but feeling attracted to my sister in a sexual way. <br><br>We lived in different countries our whole lives, but we both came back to our country of origin. We started sexting before we knew the truth. I don't want to give too much detail so I'll stop here. Just wondering if I'm gay or not.