u/Aggravating-Stay195

So my sister was just finished showering and was talking to me while changing in the hall while we talked, As I was watching and she faced me and well I do see her pussy alot this was different for some reason, Her bare pussy was just there a few meters away from me and it made me hard but i dont think she noticed anyway the day after she was in her room changing and bent over while i was in her door way and I saw her pussy fully and asshole which turned me on alot and i quickly left, i then returned like 30 minutes later and saw her laying on her side with her bottom half out only covered by black panties and it was facing the mirror but i could see anything anyway and she didnt care at all. She also made a joke yesterday when she got home from work that whenever she put her hands up her bra kept slipping and her tit kept falling out under her shirt to me and casually fixed it infront of me, Which i guess is "normal" as i see her naked daily and her bras and underwear daily. We also watched a movie last night and sat close together while under a blanket!

Okay so heres a little update! not much but yeah.

So my sister was just finished showering and was talking to me while changing in the hall while we talked, As I was watching and she faced me and well I do see her pussy alot this was different for some reason, Her bare pussy was just there a few meters away from me and it made me hard but i dont think she noticed anyway the day after she was in her room changing and bent over while i was in her door way and I saw her pussy fully and asshole which turned me on alot and i quickly left, i then returned like 30 minutes later and saw her laying on her side with her bottom half out only covered by black panties and it was facing the mirror but i could see anything anyway and she didnt care at all. She also made a joke yesterday when she got home from work that whenever she put her hands up her bra kept slipping and her tit kept falling out under her shirt to me and casually fixed it infront of me, Which i guess is "normal" as i see her naked daily and her bras and underwear daily. We also watched a movie last night and sat close together while under a blanket!

As many of you know I have a attraction to my cousin whos 18F but I also like my sister whos 24F, My cousin has left and wont be back for a while so Instead I want to try stuff with my older sister.

Me and my sister are incredibly close and have lived together all our lives. Back when I was around 16 (legal age in my country) she started being okay with me seeing her nude which at the time I didnt really mind to much as I didnt pay attention, But as i slowly got older she started asking me to put fake tan on her back with a tanning mit or lotion/sunscreen bare handed onto her back. Sometimes these would be very hard to spread meaning my hands would go to her ass cheeks or sometimes to the sides of her breasts, as i also had to do her sides and hips. She also will walk past my room naked or change infront of me or shower with the door open. Which Ive paid lots of attention to for the last few years as I slowly got attracted to her. She also leaves underwear everywhere and doesnt care if i see it. She has also seen me naked countless times and ive caught her look once before but i didnt think much of it as well it was kinda in view no matter what. She also will sometimes share a bed with me and sleep in just a shirt and panties, No bra at all while I sleep in just boxers. I just need advice on what to do as Im sure this isnt normal sibling behaviour. Shes also currently single if that makes any difference