"BABY DON'T HURT ME, DON'T HURT ME, NO MORE."
Sorry, couldn't resist with the title.
Love can be different for a range of people, but for me, it is having that knowledge that you want to be with that person for as long as possible, for them just to easily slow into your life like they were there all the time.
I could go on, but you see where I am going with this! :3