I know the advice in here is always to look at the actions not the words and I believe this is very good advice when someone is promising you everything but delivering nothing or saying they love you but behaving in ways that don't demonstrate love.
Talk is cheap and it's easy to say, "I love you," or "I care about you," and the behave in ways that show contempt or a lack of thought. The confusion and hope is what keeps people in unsatisfactory and damaging relationships for years.
But what about when it s the other way round?
What about when there are no words or love or affection but their actions suggest otherwise?