What does it mean when you guy said dont be too attached with me??

hu??? i feel so bad with this, its like he's planning to cheat on me.. argghhh... coz he said he's getting mad at himself as well he's getting ****** attached with me now, if we continue doing this that's gonna be our downfall. ( according to him ) ?? he want me not to text for a whiel coz he wanted to miss me.. what the heck?? ( what does he meant by this?? )