Im confused?

This guy that I have known for a while sometimes treats me like a lil sister but then other times treats me like its weird like tonite he was calling me babe and bub and just being a guy not big brothly or nything I need help to work out these feelings?

Huhm, friendships between people usually tend to make each person in the friendship feel comfortable with one another. That might be the reason why he is calling you those names.

Notice that I said "might"..
There could be other reasons..
I am just looking at it like that.