What does I love you sis mean?

He's trying to let you know in a gentle way that he does not want to be anything more than good friends at the moment. And if you are his good friend it may be a long time until her realizes that he may want more from the relationship. I suggest you continue to be friends but don't give up looking for another guy to date.

*Don't fall into the trap of trying to make your good friend jealous because that will just piss him off. *

He thinks you are a good friend and cares about you alot. He may or may not like you romantically, but throwing in the sis part protects him either way.

He meant you remind him of his sister... and that he cares for you that way... like a sisterly-love..

He loves you like a good mate or sister :

He loves you like a sister........sad if you like him more than a brother though......I hate it when guys say "i love you buddy".......kinda of the same thing here........if you like him, you should tell him to see what he says.

It means that he wants you to think he loves you as a sister. That in itself could mean anything: he likes you but doesn't want you to know, he hates you but wants you to think he's your friend, or even that he actually likes you as a sister. All I can tell from this is what he wants you to think. Use his other behavior clues to figure out how he really feels.

It means he loves you... but as a sister...

It means that he thinks of you more of a sister.