How do you get out of a situation where all your friends are suspicious of you because a guy you like is staring at you all the time but you try to deny that you like him but they are still suspious?

I think you should just say that the one staring is him, and not yourself.

But if you really like him, then you should just admit that you love him, confess... so on.

If you only like him as a friend, talk to the boy, he'll stop staring.