That's one fear I can't say that I own.
Most women (and men..especially men) shut down after they have been hurt.
People get their little heart screwed over a time or two and are so resistant to anything that comes toward them.
I'm not afraid to get my heart broken. Before, Like any human I was fearful of the idea because I never experienced it. I was scared of pain, I heard the horror stories, saw my friends deal with broken hearts and the tears and pain they experienced and just knew that if it was to happen to me I'd throw in the towel.
I didn't.
My heart was basically tossed into a garbage disposal and all that did was make me fearless with my emotions. I don't believe anyone could hurt me to that capacity again for one, and if they do, I know that I can and will mos def GET OVER IT. I cried, and was sad and whatever else comes with being hurt but time didn't stop for me, and it won't stop for you. If anything it will make things easier.
Its been nearly 2 years, I'm as good as new, with no reservations or fears that the next will be a reincarnation of my ex. Stop making excuses, life is entirely too short for that. People always choose to be afraid of the one person who'd never hurt them anyway. Defeats the whole purpose and starts a terrible cycle of bitter and terrified individuals. I wish the rest of the world would view negative situations as a speed bump and not a compete road block. Don't give up on being happy, your only hurting yourself by trying to "protect" your heart. think about it.