Hello Rachida, and thank you for your quick response, and especially for the time you devoted to it.
This man is 28 years old, he is brunette. I am brunette too. He is in a relationship, and so am I. He lives 20 or 30 minutes (by car) from my place but works in my municipality. It was an unexpected encounter, but I confirm your point that my thoughts are constantly occupied with him, hence my question. I had no plans with him and I did not think I would start a family either. I just wanted to know if, after this encounter, he will try to get back in touch with me or not. And whether, like me, he thinks about me and our encounter.
I’m trying to push him out of my mind so I can better get back to my relationship, but it’s very difficult for me (we can’t control our thoughts, can we? ;-)… )
I can't call him because I wouldn't know what to say, and I'd rather it come from him. And if he doesn't try to reach out, I think time will probably erase him from my memory. Who knows? lol
Here it is 
Thanks again, Rachida, and if you find anything else based on the information I gave you at your request, please don't hesitate to let me know.
See you very soon
And have a good rest if you're leaving work ^^