How can I fix a broken heart?!

How am I supposed to ask for someone to love me when their heart is broken, disappointed, hurt, betrayed, and they don't feel love? So how are they supposed to love themselves? My heart is aching for a way to not just ducktape their heart back together. But I have finally figured out that no matter how hard I try, it's just going to lead to disappointment, frustration, and failure. It's not my job to fix their heart even though it's my deepest desire. How can I fix a broken heart when mine is hurting, aching, and broken itself?