Which logical fallacy is used in the text?
All of my friends are coming to my birthday party. If Tisha doesn't, she might as well tell me that she doesn't like me.

 - red herring: the use of a completely unrelated topic or idea
 - false dichotomy: an argument that presents only two choices when more options exist
The text argues that if Tisha doesn't go to the speaker's birthday party, it means that she hates the speaker. However, there may be a number of reasons why Tisha wouldn't go to the party. This illustrates a type of logical fallacy known as a false dichotomy.