Got a feeling this is going to be a divisive one, but I HATE when I moan to DP about something trivial like feeling fat or feeling fed up at work and he responds with not comfort, not advice, but trying to change my mind as if my feelings aren't real.
For example...
Me: I've felt so grim and fat lately
Him: How much do you weigh?
Me: XXkg
Him: Haven't you been that weight for the past two years?
Me: No, I was two stone lighter when I met you and I was one bloody stone lighter a few months ago
Him: I've gained weight too
Me: Yes but you're 12 years older than me so it's almost to be expected for someone your age!
Him: I don't care about "expected", this is about how you're feeling, not how you look relative to others
Me: Well I can hardly ask anyone can I, everyone will just say 'no of course you're not fat' etc. I just have to assume the heffalump in the mirror is an accurate portrayal!
Him: So you're just feeling dysmorphic again?
FFS 'dysmorphic'... I'm not mentally ill, I'm just feeling shit because I'm overweight! I know BMI isn't necessarily accurate but I'm in the overweight section for my height. Would it kill him to just say 'of course you're not fat darling, you're just right in my opinion' or 'Maybe your weight's gone up but I hadn't noticed, you know I think you're gorgeous regardless'?! 
Before you all jump down my throat, I'm not properly annoyed at him.
It's just frustrating! I don't want your man analysis, I want comfort and reassurance!