Me And My Sister

I have a sister that is 2 years younger than me. When she was 7 and I was 9 she came home and told me about masturbation that her friend told her about. That night we locked our shared bedroom door and tried it out. Neither of us knew about it before so we didn't know that what we were doing was weird. By the time I was 11 we were touching each other. My parents still didn't know and we kept doing it. My sister insisted on trying oral and dry humping. She enjoyed giving me head when I was 12 and I would spoon her while we slept in our underwear. When I was 14, we forgot to lock the door and my mom walked in on my sister on all fours sucking me off. She didn't say anything but she was definitely mortified. We stopped after that.

Our relationship hasn't changed much, but I think it's still a bit more touchier than most sibling relationships. She has no issue with sitting on my lap and touching me inappropriately through our clothes. I can't say that I don't act the same way either, though. She's definitely grown into a very pretty girl and I definitely want to fuck her. I'm not sure if she feels the same way but I think she might. I know i****t is frowned upon and all but aside from that I don't think my sister cares too much either. My parents caught her masturbating to porn multiple times in the past and she's definitely fucked more than a few times. I also have had my fair share with women, but I'm still not quite sure what to do. Any advice?