Has someone ever confused you? For example, they tell you something really sweet and nice, and it's exactly what you needed to hear, but the next day they completely ignore you. Or, they yell at you. Or, they degrade you. The possibilities are endless. That's confusing, isn't it? People make mistakes--I am by no means saying that if someone is imperfect, they cannot say nice things to you. However, there is a difference between a mistake and a life-style. This is the line between saying, "it's okay, I'll forgive and forget," and saying, "I need to take a step back from this person."
Yes, people can mean what they say. But, saying one thing and immediately (constantly) doing something that is the complete opposite of your words is unacceptable. I'm not saying that any word spoken is irrelevant--words have power. However, I believe that what you do is more powerful than what you say.
Someone can never say the words "I love you," but show it everyday. They can be there for you when you need it most. They can cheer you up when you're upset. They can ask about how you are, make sure you're okay, and want to spend time with you whenever they can. They might remember little things about you or be willing to listen to anything you have to say, even if it's crazy. They can respect your desires, your boundaries, and your thoughts. If a person treats you with this kindness, even if they don't say it, there must be a certain level of love.
A person can say "I love you" everyday, but never show it. Maybe they don't respect your thoughts and boundaries. Maybe they never care to listen to what's on your mind and heart. Maybe they fight you on whatever you say, and make you feel bad about the human craziness that pops into your mind. Someone can say "I love you" all day long, but if they don't show it, their words are dead.
So be careful with who you believe and be careful with how you treat others. Words fall silent in the midst of actions.