Because love is everything it's what every human being wants, no matter how cold you are or how much love you receive and give everyday, it's what we can't get enough of love results in all the emotions we feel hatred is just another form of love and though they may seem like opposites, you have to love to hate because hatred comes when that person/thing hurt what you love fear comes from love, people fear a lot of things: parents,fires, murders, disasters, other people, etc.... but you only feel scared because you're afraid of losing something you love and it just goes on but the point I'm trying to make is that you live to love because without it, what's the point? why the hell would you stay alive and want to do anything if you didn't love something or someone? in essence love is the precursor and the ultimate emotion a person can feel.
When you really stand back and look at love from a distance you will notice that somehow it is both complex and very simple at the same time which i honestly just find amazing.
There are indeed two sides to every emotion. If you reward your lovers positive attitude with gratitude, they will present that same feeling again to you (and if they don't they are definitely not the *one*). Showing others who one really is without exaggeration or deception is paramount in any good relationship.
People like this will slowly drain you of the energy it takes to make a relationship work, (and lord knows it takes a lot of time and effort to make them work) its just not possible for a relationship to be in a good place if the significant other is constantly draining you with issues and constant complaints, fact is this type of lover won't stop until you and the relationship have completely run dry. Never give people permission to suck you dry, make it known that such actions are unacceptable and you will not stand for it.
Who couldn't use a well placed compliment? Compliments often make your partner feel good and everyone loves to feel good, plus it shows that you care (caring is a good thing!). Keep it genuine and never be afraid to speak from the heart. Love is a genuine compliment.