Maybe it’s me?

Two years of knowing this guy but only been talking to him for two months and I haven’t seen him since two years. I met him 2 days ago and exactly after meeting him his whole energy changed and became dry messages so I stopped replying. Then I messaged to ask what happened ? He implied nothing happened. So he continued sending short messages to which I didn’t reply to so he messaged to asked what is happening basically so I called and we talked about it and he literally said he was experimenting to see if he didn’t put any effort in a convo if it would happen. In my head we were pass this because we were. I would literally call him and we spoke for 12 hours everyday. He asked me what I feared the most and I said you’re realizing I’m annoying and overbearing and stop talking to me and he chose the day of seeing him for the first time in years to ‘experiment’ does that make sense ? In my head he just doesn’t want to talk to me anymore after meeting me and didn’t know how to just stop since he’s close friends with my sister. So I said okay well I don’t know where to go from here but I want to just stop talking to you and maybe talk every 2 months and he said ‘ so you want to stop talking because we didn’t talk consistently for a day’ so I said you’re down playing it and he said well okay and I said okay bye and he said okay

This happens to me every time and tbh I swear it’s me at this point