Let's call him Tim.
Ever since Tim got hired in our dev team we have had a good professional relationship. As time went by, I realized he was asking questions I didn't want to answer, for example: "where are you going?", when it was lunch time.
Since 2 months ago I've been successfully ignoring Tim's non-related work questions because I am always with my headphones on. That seemed to stop him a little bit.
However, he seems to be like the kind of people who would sneak in everybody's conversation. If we are talking about something he didn't listen from the beginning, he would ask: "What are you guys talking about? What did you guys say? What?" in less than 2 seconds.
I have been polite enough with him, but there have been 2 times when he has been out of line for me and I feel I can't stand it anymore:
1) The other day I was arriving late to work because I had important things to do (I'm a foreigner in the country I'm living right now so I had to go to the Visa place)
When I arrived to work, Tim was asking me how my day was at the Visa Place. I said: "It was great, I did everything I had to do there"
My boss also wanted to know about my day there, but he is my boss. He is entitled to ask all the questions and ask for papers or verification if he feels like to.
My boss didn't ask any questions. Tim said something like: What paper did they gave you there? Let me see it.
I couldn't believe it. But I felt he wasn't believing in me, so I showed him the paper and he was ok. My boss didn't even look at us when that happened, but of course he was aware it happened. Our office is not that big.
I had to go again to the Visa Place another day. That day, when I arrived work, Tim was having a conversation with himself about how I could have done it in one day instead of 2 different days. Which I didn't like because: 1) I am not lying. 2) My boss does not have a problem with me going 2 days to the Visa Place. 3) I don't have to explain anything to Tim.
2) My boss asked me to go to the tech store near our work.
Tim was interested in knowing if I was going to tech store A or tech store B. I don't know why he wanted to know, I had to buy things for my computer and my boss', Tim wasn't related to this purchase.
Tech store A is near my job (15 minutes walking), Tech store B is a little far away (let's say 20 minutes walking) but had everything my boss and I needed to buy.
So I said I was going to Tech store B. Tim didn't seem happy with my decision (I wasn't asking for his opinion either). He insisted me in telling my boss I was going to Tech Store B. Which wasn't a problem because this seems for me an obvious thing to do (going to the place where the things me and my boss need are available).
I went out, bought the things and went back. My boss was happy to see me, but Tim didn't seem like he was happy. He said: You took so long. Why did you took so long? You see? Going to Store A was going to take you longer than going to Store B.
I couldn't believe it, it was happening again.
This time my boss was listening to the conversation. He didn't say anything, but I felt like Tim was trying to say I took so long on purpose. I didn't say anything after that and remained silent until it was time to leave.
3) Tim sneaks into my bags when I buy things.
4) Tim would ask to try my food.
I'm not the only one complaining about Tim's behavior. There is another coworker who feels the same way about Tim. There are other coworkers but they just don't pay attention to him.
I don't hate Tim. I don't want to be his friend. I only want to be his coworker and be as polite as I can.
How can I make him stop?
Should I address this with him? Should I talk about it with my boss?
I don't feel like talking about this with my boss because I feel like we can solve this ourselves. And also, I don't want Tim to feel bad. If he feels offended that could change our work "good aura".
A couple of things:
Tim is clearly not my superior, he is just a coworker.
I don't understand why he seems like he's trying to put me in a bad light.
What is the politest way to say?:
TIM, DO NOT ASK ME QUESTIONS ANYMORE ABOUT NON-RELATED WORK STUFF.