koppite,
just to add in to what everyone else has said, which I completely agree with. Never should you feel used in your relationship. That's abuse. You should never ever have regret for who you are. It's not healthy. This relationship you are in should be helping to strengthen who you are as a person, not tear you apart inside.
You are right about learning from the scars. *hugs* we all have them from some point or another. I'm sorry that you have had this experience. Just remember that with every experience, it's shaping us into who we are ment to be in this life. (i've said this before, but i truely believe it) Life is full of fires, forging us into our perfect form. It's up to us to decide if we want those fires to destroy us or refine us.
Please feel free to PM me or message me anytime you need to talk.