He/she could have been a fake phony baloney from the start and the true colors finally bled through. OR the person could have really been what he/she seemed and just flipped on you...changed completely. Are there tells to help you figure out which is which? Why is it important you ask? Well the difference is you'd like to know if you were a dam* fool from the beginning or if someone wasn't acting at all and just changed into someone else. Wouldn't YOU like to know which?