I was having a petty argument. Context aside, the final response

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I was having a petty argument. Context aside, the final response reads:
"I wasn't trying from the start. I'm tired of arguing. I'm going to bed with [partner's name]"

The takeaway is the portion where they say, "I'm going to bed with..."
It's that type of response where they try and make me feel bad or offended even though I am not. I'm really just curious about how I could describe the behavior with a word.