1) What makes erotica different from Romance?
Romance almost always has a happy ending. If it doesn’t, it should at the least, have a happy for now feeling by the time it ends. Romance stirs up the reader’s emotions, whereas erotica will stir up that as well as other things. There doesn’t have to be sex scenes in romance. It can be nonexistent, implied or it can get hot and heavy, but it isn’t necessary to move the plot forward.
Erotica, on the other hand, must have sex scenes in order to make it an erotica story. A well-written erotica will have character development and a plot, not just vivid sex scenes. Erotica should be arousing for the reader. It should make you tingle in all the right places and romance should give you that tingle in your heart.