Am i the only person that feels sexual attracted to my aunt?

(Just a little history of me)
I consider myself a person quite mature for my age, I'm 19, I'm lazy, but I'm smart so I find myself somehow in balance ...
It all started when me and my cousin had a little fetish at the age of 13/14 that I wanted to know the female body at that time was still a virgin ... So me and my cousin were in the age try out new things, for me and my cousin do that we had the fetish of touching people while they slept, we try it out with some friends, and some actually liked, and with one of my cousins until I became knowledgeable, and started to grow up and stopped with that, and I finally meet the person I loved (...)
Now with that I fell into temptation (not sure why) to like older people and somehow started to find attractive the friends of my mother, who i had some cases ... but finally started to look for my aunt in a way that is sexually. I'm known as an architect in my family, but I m a musician too, I play the piano and because of this I have some very good and soft hands ... known to be a good masseuse in my family ... One day at the beach my aunt ask me if I could put some oil in her body, but that changed to a massage and I love to do that, and my aunt says it was divine she was so horny I could see and hear that.... she began worshiping my massage that i stay for one hour massaging her because almost i touch her vagina and that because we were pleasured with that.
Since then I want to go back to do another massage but this time both know it would be different ...
I have plenty of times that I'm sad because I know that is not correct, but I still feel the same attraction (Warning: It's nothing extreme that nothing insane or maniac that i want the most)
I ask her if she want me to do another massage and she said yes and even promised me that we will do it again ...whether I do not know what to do if i go with this or just stop ..