An attempt at flirting?

Gym cutie is now in a questionable situation in my head. I can't decide if he's a jerk or extremely shy.

I received my Christmas miracle on Christmas eve when he decided to grace the gym with his presence. As soon as I saw him, I regretted my wardrobe choice that morning of a more masculine shirt so I retreated to the women's locker room to change into a sleeveless shirt that was more flattering to my new figure.

As life would have it, my routine that day called for the pulley weights which was the same section of the gym he was working out. When I had to step out for a minute to give my sister something out of my car, I purposely left my towel and workout notes on the bench where I was working out so no one would move my stuff.

Imagine my surprise when I get back to my bench and reach for my bar only to see it's not there. I looked over to my left at the next machine and I see that he's stolen my bar.

My first instinct told me it could have been an attempt at flirting but when I looked over and saw that he wasn't waiting for a reaction but instead working out furiously, I pouted as I went to retrieve another bar to resume my workout.

When I finished with the set, I noticed he'd moved to another area.

I told my sister the story and she thinks it may have been his attempt to get me to say something to him in the event that he is terribly shy. I do think this could be the case, but I'm also afraid the moment has passed. If you can come up with any clever comeback lines I can use in the future I'd be very appreciative but if not, then maybe I will give up this dream of he and I... Also, I'd love to hear your opinion do you think he was flirting or he is just a jerk?