Yes, it's like we haven't known each other for very long, and I kind of like you. It's an idiom, so it's just the way we talk. After I know you for a longer time, I will know you better, then I would be able to say, I know you, and I am sure that I really like you (a lot).

yes

Technically these are the same. That does not mean they would be used with the same situation. "I kind of like you" or "Do you kind of like me?" would usually be between two people where in one is letting the other know of an attraction. The reality may be that the "like" is much more than "kind of." For this common reason, (USA) English speakers steer clear of this phrase (outside of this attraction situation) in case there may be a misunderstanding between two non-atracted people. These people not wanting to have a misunderstanding will stick with "I like you. You are ll right." or, "You are all right by me." or "no matter what any body else is saying, you are an ok guy (or gal)." Another reason "you kind of like me? and "I kind of like you" are are set aside for the situation of attraction is because they are actually a little rude between co-workers or people you know. To admit you "kind of like a person" (outside of the situation discussed) is to admit you kind of do not like the person is some other ways. "Why do you only KIND OF like me? We have been working together for six months! What did I ever do to you?" If you think a person only kind of likes you, or you only kind of like someone, it is best to keep it to yourself.

yes, it means you slightly like me But is is informal

Hi! yeah! It's right! means I like you somehow!!