<human>: Condense the text into a few key points

He works at a car dealership, and I suspect it's just a matter of bringing home his work habits. We've been together for over a year, and it feels like he can never just chill with me. If I, say, ask for a glass of water, he'll offer a glass of juice, and just ramble the fuck on about it. I clench my teeth and decline because he's just being the lovely man I met, but enough already. It's evolved into him assuming I want more than what I've asked for, and he gets frustrated with his own assumptions.

I'll ask him to grab a few groceries on the way home, and he'll make himself angry ASSUMING that I don't like what he bought. I'll just stand there straight faced like, okay ... I didn't say anything about the hotdogs. I like the hotdogs. Can you just be quiet and let me eat my hotdogs without trying to upgrade me to a newer model?! Is it his subconscious telling him to find a more high-maintenance girl or something?
<bot>: My boyfriend won't stop selling himself long after I've proven that he makes me more than happy, and he's the cause of his own frustrations.