Is it normal?

Completely normal

15 is exploratory time. Nothing is "weird". All mostly normal. Rest easy =)

You there...

What do u mean?

Have you tried anything. What does she look like. Have you ever seen g her naked...

When I was younger I did see her naked

I have done it. You boy or girl and your fifteen. How old is your bro, sister..

Younger like...11

I was ten my brother was twelve. Our parents were out at our next door neighbor's house. My brother showed me XXX vids at an online site on his laptop.
Those vids got us both very aroused. We touched each other a lot before we both admitted to touching ourselves at night in our rooms. We ended off masturbating together as we looked at those vids. We got interrupted when we heard our parents returning to the house. We were lucky to have been upstairs in my brother's room and we're able to stop in time not to get caught. We only did it that one time because having that close call scared us.