In my workplace, shift begins with roll call, and his name was one of the few that I've easly learned and come to known who it belongs to.

He caught my attention in theat first sight, - he seemed to be a very cool person.

He giaven this kind of "high school boy" vibe, even though he looksed like fully grown up meman with his more than averge atlethic body and beard.

But his attitude, jokes and the sparkles in the eyes shown hised a very young, boyish spirit.

I didn't think he didn'twould notice me at all.

Your original sentence makes complete sense. But in English, we tend to say "don't think (something)", putting the negative with "think", rather than with the other verb. It's a bit odd, but it's just how it's normally said.

For the first months I was completely uninterested in making friends or any socializationing.

Things changed with the new year and his email -: an invitation forto a running session.

I have a past with runn ing the past.

"I have a past with running" sounds like you're saying you have a "dark past", meaning you ran in the past but something bad happened.

I camewent up to him to ask about the details.

In the nend those running sessions didn't work out, but at least, or more importantly, it started our relationship.

I believe that forin the beginning he was talking to me just to kill the time, to do anything except work.

Maybe later he was talking to me bacuaecause I was always ready to listen to him about his passion.

He started to putlay tricks on me and I did not remain in debtcertainly returned the gesture.

I like the original sentence :) But it doesn't sound very natural in English so I've changed it to something which I think reflects your tone.

FromAs soon as we turninged off aour devices one of us was using orould be shooting thea rubber band at eachthe other tor jostling and wrestling with each other.

I'm not sure about the meaning here - which 'device' are you writing about?

It was fun,; I smiled and laughed a lot thanks to him.

You could also use a hyphen here (--) or write it as two separate sentences.

One of the reasons I trusted him and felt comfortable around him was that I've known knew his girlfriend.

She was workingorked at the same company, but at higher position.

Because I respected her, I thought, "Iif she trusts him, then he must be a good guy and I can trust him as well".

We went ton a run together once.

He gave me his banana to add to my oatmeal.

During my vaccation I was updateing him on how my running iwas doing.

We were jus at colleagues from work.

He was one of the few that asked me what' was wrong with concerd.

I'm not sure which word you were meaning to type at the end, but the sentence sounds fine without it.

Some time later there was something aobviously wrong with him.

I wanted to my action speaksay, "hey, if you need me I'm here, y. You can talk with me about what's on your mind or I can help with distracted you from troublewhat's troubling you".

Even thoughBut I was full of doubts.

He surely haves more trusted family and friends which he can talk with, who can give him a good advice and comfort.

I doidn't have enough wisdom nor experience to be a good advisor.

I could only said to him, "I'm sorry".

Some time later he said that actually my reaction was one of the best, and that the chocolate bar I bought, put in thea box and throew at him from thea distance (I tried to remain anonymous but somehow he figured me out) made him feel a little better.

Ironically, I asked his girlfriend what kind of sweets he likes and she suggested me that chocolate bar.

You could also say "suggested to me" (remember the preposition, 'to'), but it sounds fine without.

Later I learned that she broke up with him and that was a reason for his anger and sadness.