My brother asked my to kiss him

My family sees him as the cute little boy who would never do anything bad for no reason.

We used to fight all the time because he always argued with me for no reason. Now, we’re okay because he stopped picking fights. But we never really talk when it’s just the two of us.

One day, we were talking and he asked me to put my phone down and have a conversation with him because he felt chatty. I said okay, but then he started acting weird. I could tell he wanted something from me, so I asked him. Then he said he had a gift for me and told me to close my eyes.

He then tried to kiss me on the chin. I felt weird, but I didn’t think much of it. I asked him what the gift was, and he told me to kiss him — he even begged me to.

I got scared because I knew that if he really wanted to do something, he could — because of how strong he is. I told him not to joke like that again, even though I knew he wasn’t joking. I made it clear that I didn’t like what happened.

To be honest, I was shocked and didn’t know what to do. I tried really hard to stay calm and let it pass.

But now I feel like I’m in danger around him, because today he grabbed my chin really fast and hard — like he was going to kiss me again. But my mom was around, so he stopped, even though I know he could’ve done it anyway.

Please help me. What should I do?
I CAN’T tell my family, because I had a situation before and no one helped me. I’ve lost trust in them.