Am I really the bitch with the ‘tude ?

Long story short, I recently dated a guy I work with. Same department and everything. He lied to me about some major things like actually wanting to be with me(he was never interested even though he pretended like he did) and using the money($1000) I let him borrow for his sick sister and he actually used for a trip to New York. We broke up but although his feelings were never real, mine were. I was to the point I was falling for him. Which he knew because he asked. And having those feelings and finding out none of his were real, yes I was *** off. At the beginning of the breakup it got bad. I went through depression and had to go to the ER because I wasn’t eating or drinking anything. Then it really turned to rage. I spoke with my supervisor (female) who is basically best friends with my ex, about everything. So she knows everything that’s going on. Me and her have had problems before because there are some things we just don’t see eye to eye on. Recently she comes to me and asks what’s been going on. I was confused because I was good. There were a couple of bad days but nothing bad to where it needed to be addressed. She says I’ve had an attitude coming in everyday. Mainly because I don’t tell them good morning. A little about me, I don’t really tell ANYONE good morning. Especially first thing. I just stay to myself. And lately I’m just going to work to get it over with. Then another coworker calls me a *** for no reason. He asked me to get an appliance out of top stock and before I even said anything he says never mind I’ll do it. As he’s hooking up to the equipment I hear him calling me a ***. Granted yes, I would of said no because I was in the middle of doing something. But to get mad because I wouldn’t do it for especially when your reason is “I don’t like driving it” is stupid. It’s apart of your job. But I tried to switch departments but got denied. So now I’m stuck there. And I’m miserable. At least until I can find another job. So am I really a *** with an attitude? I’ll give more details if needed