Guys, Gym & awkward instances and what to make of it?

[Anonymous]

There’s this guy who keeps acting weird at the gym and constantly stared or passes near by when my friend and I are usually working out. I always catch the guy staring and sometimes bluntly ignore or sometimes try to creep him out lol.
Besides, the other day he waited for us to leave the gym and the moment we walked out of the door, he played an international song that is similar to our language. Today, he again waited outside and kept looking while I was about to get to the driving seat. It’s really awkward and I don’t understand what to infer from it. Moreover when he got to the gym he was circling around before parking and kept looking while we were on the treadmill. He probably doesn’t know that we alternate cars which I believe made him circle around. It is also notable that during the song day, his car was somehow parked infront of ours. Given this information, is this pretty common at gym? Am I over analyzing? I just don’t wanna misinterpret when confronting as this is becoming uncomfortable.

[Guy13]

If he does not work there then what is the problem? Go when he is not there. If you see him then leave and go back a different time. Change your schedule and do not be so predictable?

[Avicenna]

That's weird behavior all right

[Iron_Man]

That’s not common

[In_Trance]

Go to the gym at a different time