What do you do when a boy tells your friend he likes you but he has a gf?

hey......well its about some new boy at school this is a weird story well...this wasn't so long ago well one of my best friends asked my crush if he liked me then he said kinda but as a hand signal then he has a gf what does this mean? it seems like he really likes me because he always stares at me and btw me and him have never spoken to eachother in our lifes because we are both shy