Does this guy like me or what?

Anonymous
We know each other 3-4months he's always been different with me quieter not talking that much, when he's a confident guy. Although we always stand extremely close together. The last time when I was talking to to him as he was explaining something workout we were standing side by side close, my arm brushed against his accidentally I could feel the hairs on his arm he didn't move his arm away just left it there continued talking I moved mine away slowly after a couple of seconds. He afterwards moved in closer moving his arm nearer almost touching just close that you know it's there. We always stand extremely close to each other like in a intimate closeness. Ever since I touched his arm he seems more comfortable , talkative and confident around me. The next time I saw him we ended up talking about our weekend ended up talking long about movies, asking about me , where I'm from. He was joking with me a lot telling me stuff. He's my trainer he's done other flirty touching like he got me to touch off his hand. He's just wanting to know so much about me lately. He also asked what age I was? randomly took him 3 months to ask this? He's 25 , I'm 21. I didn't see him for a week the next time I saw him he seemed a little quiet again until I started asking him questions he was saying a lot he wasn't completely comfortable like the week before. He still stood close or when he was showing me something on his phone he was leaning closer. Should I touch him again only touched him once?
Updates
+1 y
Why wasn't he as comfortable as the last time I saw him which was 2 weeks ago? and then yesterday back to his slightly quieter ways? until I started asking him more about what he'd told me? he talked more then.
Do I make him nervous? He's confident
Updates
+1 y
Should I touch him again accidentally brushing my arm/shoulder against him? since I only touched him once?
Does this guy like me or what?
2 Opinion