Thread: Sentence in accusative or dative case?

я смотрю тебе.
я смотрю тебя.

'im watching you'

how do i say this in russian?

Originally Posted by tiudavidharris

'im watching you'

Not just looking, but watching?

If I understand you correctly, "I am watching you" implies that you are watching all my actions, in order to know everything I do, and how I do it, right? Or even, you may be spying me (so you might do it secretly)?

If yes, then your choice is

to watch (in this context) = наблюдать за + instrumental
or
следить за + instrumental (this one may also imply spying).

So we get: Я наблюдаю за тобой. or Я слежу за тобой.

смотреть is just "to look"
If you want to say "I am looking at you", it is "Я смотрю на тебя".