Would you feel creeped out?

I got an alert that a package had been delivered (to my apartment mailbox).
I would usually just stop by my mailbox after work but I have been in my place the last 7 hours so I decided to take a short walk to the mailbox.

When I got there, there was a guy who had apparently just checked his mail and got in his vehicle (right in front of the mailboxes)

I proceeded to go to my mailbox, and he's watching. He pulls out his parking spot, still watching.
My thoughts were, did he see where my mailbox is located, thus noting my address?

I get my package and head back to my apartment. I see him up ahead as he backs into his parking space, and watching me as I walk by.

I turned around as I rounded the corner to go to my apartment (in the next building) and sure enough, he's STILL WATCHING. I don't understand why males stare like this.

I do not live in sketchy apartments nor a sketchy neighborhood.

I'm not sure if it's because of past experiences but I feel a little creeped out.