They have been in post for about 4 years, I joined just over 2 years ago and was trained by Co worker.
Assistant manager position of our team came up and we both applied. I was successful. This has lead to some bitterness. Co worker has not said one word about my promotion, or congratulated me. I haven't made a big deal of it, as I didn't want to upset him, but I'm really pleased and it's disappointing that I can't talk about it.
There is bad feeling and a tense atmosphere.It's not directly directed at me, but its odd comments here and there, if my manager asks me a question, this Co worker will butt into the conversation - with an opposing view to whatever I have said. To add to this Other people in the office have said that my co worker should have got the position, (which makes me feel wonderful!) again not directly to me, but in my vicinity so I have overheard.
Has anyone been in this position before and have any idea how best to deal?