Invisible

Louis Tomlinson was sure about something: it didn't matter where he was, something, or maybe someone was always protecting him.

He was completely sure about this. His mother told him that maybe he had a very hard worker angel, or maybe he was just a lucky boy.

What made Louis feel always protected?

Harry.

But Louis couldn't see him. Because Harry was invisible.

(or Harry is Louis's invisible protector and he falls in love with him)