What does it mean when a guy constantly picks on a girl?

Anonymous
There is this guy who is always insulting to me. Mostly it's calling me annoying names or cracking jokes at my expense. He always tries to start a immature fight with me or insults little things I do. Yet he will defend his actions by telling me he is not serious in what he says and only does it to "get a rise out of me". A lot of my friends have started to notice his behavior and have described it as an "old married couple" or "a 5 year old pulling the pigtails of a girl". I just want to know whether it's cause of something else or if he really is just an asshole.
What does it mean when a guy constantly picks on a girl?
2 Opinion