Kooyeen, if you see the potential for misunderstanding in the third sentence, your English is REALLY getting there. I'd say it's truly not a good idea to use #3, because "like me" doesn't have any other meaning, and I can't really be like a novel - but you can compare a person to a dog, and this is usually considered quite insulting. Perhaps because we are used to the construction of "friends like those" and others that are similar that we expect the friends and the those to be the same "things" (people) so we see "dog like your mom" and we think you are saying that dog is the same as mom.
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