My sister's slag

One day my sister (who is 4 years older than I am) lent me her cell phone to fix some things and I found some very yummy photos, about 5 or 6 of hers that looked like they had been taken by her partner at the time where she was standing with her bum in the middle of a mountain. There were photos where her pussy was dripping down her legs. After doing what I had to do on the cell phone, I told her about these photos and she got upset. When we were younger, we used to play house with a distant cousin and she would get jealous because my cousin would suck my cock and sometimes let me touch it for that reason, also when I fell asleep, she would grab my cock all over, never gave it much thought because I was very young. Never managed to spy on her, although I didn't really try hard, but I'm left with the thrill of seeing those photos where she looked very slutty.