Is my gym crush interested or just being friendly?

Anonymous
Hi there. I started to go to a new gym last month. I always mind my business but this time this happened. I was trying to set up a machine but couldn't figure it out, so I asked this girl that was passing by and she kinda explained. Then this guy approached me to explain everything about the machine and had a small talk.

From that day on we said hello, smiled and sometimes talked a bit. I'm shy and as I said, I mind my business, so at first I didn't want to pay attention to him & I never started the convo, but he did.

After a few days, we talked more than before & he sometimes touches or pinches my arm, touched my forehead too (while lifting weight my vein pops out so he touched it).

A few days ago, we passed each other as he was leaving, he asked what I had left to do & told him I was going to do an exercise but he offered to help me do a similar one he thought was better. The next day we didn't talk much because he was with his friend and he was leaving earlier than usual. Before doing so, he came from across the other side of the gym to check what I was doing, talk to me about the previous day and say goodbye.

Although I haven't seen him act the same way, he talks to other girls and guys he knows so I am not sure if he's just being friendly or is interested. I'm scared to let him know because I don't know if he has a girlfriend & don't want to make him uncomfortable.
Is my gym crush interested or just being friendly?
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