Most Helpful Guy
You know, it's hard to say given just what you shared there as it's completely possible that you're just being overly sensitive. However, the way you describe it definitely makes it sound like he's trying to fully establish that you're just a friend to him now and is thus using a word that makes it very clear that you're now equivalent to just another guy.
Most Helpful Girl
he knows it irks you so he wanted to get a reaction out of you. he did. do not let him get to you. or he will think you still hung up on him or are you?