What the eff does this mean?

okay my crush has a gf and yesterday his gf was absent. He gave me a hug and i told him i was cold and he hugged me tighter and said 'does this warm you up?' i didnt respond but his neck was warm so i put mu cheeck there and he just kissed my neck and blew in my ear. This lasted from one side of the hallways to the other. after he blew in my ear he just smiles at me. i didnt know what to do so i just did the guppy thing with him. Its when i squeeze his cheeks so he looks like a fish and make him say guppy its why whenever he sees me he runs to me yelling GUPPY!!!! . what does the neck and blow in the ear mean!?!?!?!