What might be the reason that my guy best friend teases our mutual female friends and not me?

Updates
+1 y
Hi, thank you so much everyone but I guess teasing here has been interpreted as flirtatious, but by teasing I meant hitting them (not hitting on them) , jokingly criticizing them and calling them names ( just like what we do with close friends) , although he has deeper conversations with me than with others. But then again , I think that's just because I am the most available
Updates
+1 y
So hey everyone once again, I just wanted to tell you that I ended up confessing to that friend and he said that he liked me back too ( but he isn't serious) , so I guess the reason all along was that he respected me and didn't want to be silly around me.
What might be the reason that my guy best friend teases our mutual female friends and not me?
Post Opinion