When playing Minecraft I can't get my mouse to move to my second monitor?

I play in full screen I hate playing in windowed mode it just and I know full screen isn't the problem because my mouse will go to the second monitor on youtube and basically anything full screen

Games tend to lock you into the screen you are full screen in. Browsers don't, which is why the mouse moves in youtube etc.

Thanks do you happen to know a way to get around it

A game is different than youtube or other things of the like. When you can physically see the cursor you can move it to the second screen. Try pausing MineCraft then moving your mouse to the second screen