Guys do you accidently touch girls you are not attracted to?

Do guys "accidentally" touch any girl often.. or is it a sign he likes me? The guy helps me with homework.. we accidentally touch hands a lot.. and he put his arm completely over mine today (touching to help me with a problem). Am I reading into it?

Another words, if he wasn't attracted.. wouldn't he be more cautious?

Come on someone give me a best answer!
Guys do you accidently touch girls you are not attracted to?
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