I really don't know.. I'm torn

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Well I need some advice. I'm 18 and engaged to my 20 year old boyfriend. We have been together for 4 years in July .. I love him we have two kids. But all we do is fight he doesn't help me with house work he wants to control my life. And he yells at out kids all the time. I've tried talking to him but I just don't know how to go about it. Is it worth it? I