Boys suck

So get this, my cousin got a girl pregnant their senior year. He signs up for the marines but went to college for a year before he leaves. He breaks up with he girl and leaves her on her own. Gets high and drinks and parties at college. The baby was born in November and now he's dating someone else and leaves for boot camp in a few days I think. I had to share how much I hate him right now. My Grammy says I'm being to harsh on him. Am I?