I don't understand

I really don't get how one second every is perfect and the next you want me gone and you're calling me a slut. What did I do to you? ABSOLUTLY NOTHING. All I do is give you my everything. I love you. All I do is try to make you happy, but I'm never enough for you. I'm sorry I'm not the perfect innocent girl you thought but you're not exactly a saint either. I mean how can you be so cruel to someone you " love" and is carrying your child. You're acting like you don't have a heart, which I know is a lie because you're the sweetest guy I know 80% of the time. But then out of nowhere you get like this. You love to say mean shit when you're mad, you enjoy making me hate myself