My sister is 16yo and I have 18, and since the last year, I want so much to experiment mutual masturbation with her.

I asked her finally 2 weeks ago nervously and she said she will think to it, last week she came in my room when I was playing video game and she said she was okay.

We waiting our parents left the house to work, we get naked on my bed side by side, and when start to talk about what we like in sex, sexual experience. I firstly was excited so I got hard and start to stroke slowly, she said she found my dick pretty nice and that it turns her on and she start to rub.

Then nervously we started to touch each other, belly, tight, breast, inner tigh until I had my hand on her pussy and her hand groped my dick and we made it. Both of us came, she wanted to taste my cum, so she put all my tip in her mouth to clean and she liked it, and I lick her wet on my fingers.

It was so good