Hi Nastacia. According to my understanding, both sentences quoted are in imperative mood. The difference lies is that when it's negative with a "no" at the beginning of the sentence, then the object pronoun, like "me" in this case, will always be placed before the verb. Otherwise, the object pronoun needs to be placed right after the verb, combined together as a same word, like "digame" in this case. It's different from English grammar where the object pronoun is always placed after the verb as long as in imperative mood: Don't tell me this./Tell me this, please. As to the reflexive verbs you mentioned, it's another topic while the placement of the object pronoun of the reflexive verb follows the same rules explained above. For example, Levántate temprano!/ No te levantes temprano! For your reference. :-)