Why can't I love the mother of my 2 kids anymore?

What the hell is this. Having a child is the biggest responsibility. Why you had children with her if you don't love her? What if she gets bored of you while you are in love with her. Remember, Human beings cannot be treated like objects. If you leave her, you are going to spoil lives of your children for your selfish reasons. When you love someone, you should be ready to love their faults too.