Why did he do this?

I was hanging out with my guy friend and we were sitting together on a swing. First of all he put his hand on mine and I said nothing because I like him anyways then he was like omg I'm so sorry that was an accident. Second my shoelaces untied and he literally dived to the ground to tie them for me. (I didn't ask him to tie them). Was the hand touch really an accident? Why did he tie my shoelaces for me?
Updates
+1 y
Also he left his hand on mine a few seconds before apologising?
Why did he do this?
Post Opinion