Coworker with the same age, higher salary and grade, older in the company, different position, some common work, same office.

Although, he is so jealous of me, not only jealous he also hates me because of the following reasons:

1. He believes that I am more qualified than him, people usually say I am a very good employee, but he reacted to this and started lately to work hard and earn some certificates, so he should not feel that towards me anymore, but he still feels.
2. Every time he sees me in a good relation with a certain person in our company, he starts to establish a relation with him or her, adding them to his Facebook...etc.
3. He sees that I am from a family with a higher social level than his family.
4. May be there are somethings else that I don't know or just don't remember it now.

He is a fake tricky person, his soul is full of evil and hatred, he just feels insecure and lacks to confidence, I believe also that he suffers from inferiority complex. He pretends in front of most people that he is good.

He always wants to interfere in my job, he always wants to see what I am doing, every time he takes a look on my laptop to see what email I am sending or what kind of work I am busy with.

I suspected him that he was stealing some data from my laptop, I went out of the office and returned back, the hardware of the door sometimes hang and does not open the door, then he opened the door I found him tension, the screen saver on my laptop was not working although I was out of office for more than 10 minutes, also I have found that some files were accesses about 3 minutes before I came back to the office.

He always want to pretend and convince me that I am his intimated friend and that he trusts me so much and always invite me for an outing, but I did never feel comfortable with him.

For me, I have never let him feel such feelings, I am treating him in a very nice way, always assisting him in everything, and I did many things for him that he should be grateful for, but I know that he is not a loyal person, he wants just to utilize me, I have never said I am good or I am nice or people admire me or any kind of talking that may arouse his jealousy.

I tried a lot to enhance our relation, we had one big fight before, and he unfriended me several times from Facebook before.

A couple of days ago I was telling a friend coworker that he knows him before me even, he told that this person is not nice one, he is tricky....etc

I really can't even afford remembering him, i am trying to look for another job, this person became a nightmare in my life.

There are a lot of details, but I really don't want to make my message any longer.