People like this can be very convincing and will try really hard to get you to do what they want.
If something doesn't feel right, it's a good idea to tell someone you trust.
The other person may end up showing them to other people or use them to blackmail you.
And there are ways that you can report your concern.
Ask the person to stop As a first step, you might want to deal with the situation yourself.
Online grooming is when someone uses the internet to trick, force or pressure a young person into doing something sexual - like sending a naked video or image of themselves. If it's happening, or has happened to you, we can help you. It can even be a good way of making new friends sometimes.
Most of us talk to people online – it's a great way to stay connected.
If you think you're being groomed don't worry about getting in trouble – you haven't done anything wrong.
There are people for you talk to – like our Childline counsellors.
Grooming online When people are online, they can hide who they really are.
They might send you a photo or video they say is of themselves when it isn't actually them.
You can ask the person to stop - tell them you don't feel comfortable sending sexual images of yourself.