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

This isn't that big of a deal but it does get on my nerves. My fiance is very smart and a nice guy but he also likes to debate everything I say. Sometimes, I'll just stop and be like...so you disagree? "No, I'm just saying blah blah blah." So...you're debating for the sake of debating? "No, I'm just saying blah blah blah." So, then, yes...you're debating...for the sake of debating...

He'll do this with experiences he doesn't share or hasn't shared for nearly as long. I could tell him X about Y video game I've played for 5 years, he'll argue cuz he's played for 3 months. I'll tell him about X experience in Y job, he'll argue even though he's never held the job. I swear he does this at least 90% of the time but he always denies it. But I find myself defending my opinions with him almost constantly. And sometimes, it makes me feel like he just doesn't think I'm very smart so he naturally has to respond. He swears this isn't the case but when nearly every word you say is critiqued, it's hard to feel cheery all the time.

I'm not sure if I should just start "training" myself to ignore it or find a way to stop him in the middle of his crap.
<bot>: We get along great but he's a smartypants who likes to debate everything I say, sometimes for seemingly no reason.