Is it when everytime your heart beats you feel a stabbing sensation and like you'll surely die?
Is it when every breath sends a slicing pain through your chest?
Is it when you've not slept for an entire week because they left you for your best mate?

Is it when you will still be there for her and walk through the pain, run to her, crawl to her if you have to, just so long as you reach you to make sure she's safe if she needs you?

Is it when you've not slept for an entire week, and your heart is ripping apart inside your chest and you're falling apart and you still smile and remember every little detail about her?

Is it when you want nothing more than for her to be happy with her new boyfriend, but at the same time you want to wake up and it all be a nightmare and she's still with you, is that love?