<human>: We generally have a good relationship, but there have been instances of disrespect that have stuck with me over the past year. He has "jokingly" told his friends (in front of me) that I'm anorexic. He's told me "shut your mouth" also "jokingly." He constantly makes fun of me for little mistakes, which to him is probably endearing. To me, it's annoying. 

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Today, I got a missed call on my phone. When I called the unknown number back, I got his cousin's voicemail. His cousin has schizophrenia and bipolar disorder, and isn't stable. He was just released from some hospital, and he doesn't take his meds. He's also had a history of violence. Anyway, I told my boyfriend of this missed call, and he was shocked and said he had no idea why he called me or how he has my number. I told him his cousin had probably looked it upon on his phone and saved it. Then, I said, "That's why people have passcodes." My boyfriend replied, "I'm not talking to you if you're going to make smartass remarks like that." I was being genuine when I made that remark, and didn't intend it to be sarcastic. I told my boyfriend I disliked how I was disrespected, and that at 27, he shouldn't be talking to anyone, let alone his girlfriend, like that. I'm seriously considered ending the relationship because of this incident and others (ones I haven't mentioned too), but I don't know if it's a crazy reason or not. This is my first serious relationship, and I need some realistic advice. Help?

Can you give me a shortened version of the text?
<bot>: Boyfriend said I made a smart ass remark. I've felt put down before. Is this a dumb reason to break-up?