I think this song is about how she had bad relationships in the past and how after each one she was able to heal the scar it left, but each time it left her heart frozen. Then she met someone new, someone who was able to melt her cold heart and everyone around her is trying to stop her because they see the same thing happening again, but she doesn't care anymore because she just wants to feel love. No matter how many times it leaves her scarred and broken, she just wants to feel love, that's why she's constantly bleeding love.
The crazy thing is. I can actually really relate to this song. It's kinda how my heart is now. I'm falling in love with someone and I'm not even sure where the two of us stand since he is away at training and communicating is kinda hard. And it hearts to be falling in love with someone, not sure if they feel the same way, it just feels like I'm just waiting to get my heart ripped to shreds.