Why Make Them Fall? in Questions...

If you're not going to love someone back with all you have, why do EVERYTHING in your power to make them fall in love with you? Why after go back on your words/actions and say sorry you got attached? Wth?! What was the point? You KNEW full well what you were doing, the damage it would cause, why do it? An experiment to see if you could?
Was it amusing to watch as they surrendered all to you?
You claim to love this one, be in love with that one, and friends with countless others, but you're too practiced and smooth to be believed when you say you'd never done it before. So what is so wrong in your life that you must collect and shatter hearts? Why deliberately make someone fall in love with you if you have no intention of catching them?

Why would anyone, especially a spouse, let you get away with it time and again?