There is an easy way to decide whether to use I or me: try out the sentence with just I or me (or if you need a plural, we or us - "we" is equivalent to "I" and "us" is equivalent to "me."): He told Tom and (I or me?) to get ready. He told I to get ready? NO He told me to get ready? YES Therefore, He told Tom and me to get ready. If John and (I or me?) get married, we'll have two kids. If me get married? NO If I get married? YES Therefore, If John and I get married, we'll have two kids. Just between you and (I or me?), this is a bad idea. Because "between" needs to be followed by a plural, we'll use "we" and "us" to figure this out. Just between we? NO Just between us? YES Just between you and me, this is a bad idea. Also you don't use a subject pronoun and object pronoun together. He and I - correct: "He and I are going to town." Him and me - correct: "She told him and me the truth." Him and I - WRONG He and me - WRONG

The usage of "you and i","you and me" is like "i" and "me". -"you and i" are personal pronoun used like a subject. Example: You and i have to go to the school right now,it's too late! -"you and me" are objects. Example: There's a big difference between you and me. Feel free to use them!Hope it help:)