"One thing to remember when falling in love: wear your heart out on your sleeves but always put your shield on it. So if cupid's arrows hit you, it won't bleed that much to hurt forever."
This may be factual or not but at some point in our lives when we seem to have given everything we got for love's sake and we end up empty-handed, that's when the shields go up and a wall - tall, hard and thick as China's great one, we would no longer want that emotion to permeate the heart. It is when we become cold and unyielding, not trusting and not wanting to love again for fear of falling, giving it all and then failing over again.
Many of us have gone to that threshold several times we lash ourselves at the back in lieu of seeing the hard core truth about a love that we no longer have in our hearts to hold. Just because in truth there are things we have no control over - our partner's feelings for us, which may have just died down along the line. We wake up one day pondering, are we all too exhausted to have little love left in our heart for ourselves? Hopefully not.
But like I said, love can never run out - it just keeps on flowing like a mountain spring, for as long as the source still exists. That source is you - your inner self which allows you to thrive in the most unlikely places and scenario, which lets you bounce back after a great depression and which sets the pace in your way of living life each day. You only need to own it up - all your actions and plans in life, all your decisions that make you who you are, whether it failed or succeeded - even in the face of love.
Now in the midst of the turmoil your heart is facing you should know when and how to let your mind supercede. This way you have no regrets about not having done anything at all to lessen the impact of a loss. In the end, whether you say you are a "heart-over-mind" type you know your brain would always come up with better solutions for coping up and getting back on your feet. The only challenge is knowing when and how to accept that circumstance which you cannot change and then start moving on from there. Taking it little by little each day and one meager but sure step at a time will make things a little better to accept. Take it from there and let the good vibes flow in. Surely, you will be happy to love again.