IMO, I think much of it has to do with yourself. As you mature, you stop finger-pointing at others and really finger-point at yourself. If you aren't mature enough in yourself and come straight out with your expectations of the relationship, then yes you'll be hurt. Women tend to love and care wholeheartly whereas men (not all.

) but many look at relationships from a subjective point of view. They disregard the emotion and look at the logic. It's in their nature.
If you know you, then you'll know when you're mature enough to handle a relationship because you won't let the past determine your future.