Been together 4 years. Always had a turbulent relationship to say the least but we we supposedly getting better. This past week how ever he's being a bastard to me and I have no idea why.
It started last Saturday night. He went for a drink with his mates and I went out with mine. At midnight he called to say he was in a taxi on way home and did I want picking up. I said yeah and told him what pub we were in. To cut long story short he came in, face on ... Started ranting at me about what a dive the place was we were in and said it was obviously a pick up bar (it's a really popular, busy pub in the middle of the main drinking area of the city). He ranted on, made us leave, refused takeaway like we'd planned and carried on ranting on the way home. Totally ruined my night.
He apologised the day after but still maintained it wasn't really his fault as the pub had wound him up!!!???
Later in the week ... I'm sat looking at photos of me and a friend and he snaps "what do you keep staring at her for?? Do you fancy her or something??" 
Next day we went to cinema to see a horror film. When we left the cinema I joked "that's who is haunting our house!" (I've seen a few weird happenings in our house but I was clearly joking on this occasion). Anyway he blew up, started ranting at me about how he was sick of my bullshit, I'm taking the piss out of the house, he's sick of it and it stops now agsin he carried it on all night, right into bed time again, ruining the night.
Later in the week we're sat watching tv and something about lookalikes came on. I giggled and recalled the time my youngest son had casually suggested that my mum looked like the guy from SAW. dP used to find this funny too but on this occasion - turns out it's now no longer funny and he snapped that it was about time I grew up 
Friday night we're watching a movie and in one scene the couple of the house hire a maid/cleaner. I joke to DP "obviously an affair will happen between the bloke and the Young maid ..."
Well he flipped again, said I was out of order and that if I think that, he may as well assume that I'm having an affair with male colleagues at work. This isn't the first time he's suggested that I am likely to mess around at work and I told him that me joking about a film and him turning into a real life dig at my work was not nice. No apology, nothing in fact, he maintained that I was the unreasonable one.
Last one for this week, last night he insisted on doing a BBQ. I stayed outside with him, tried engaging with him, offered to help etc and afterwards he said he was going to knock bbq's on the head as it just results in him running around after everyone like a "fucking idiot". It was his idea!!! I don't particukarly like bbqs but he insists almost weekly on them yet now it's my fault???
So last night we ended up going to bed not talking ... Why? Because he said he'd doenloaded a movie for us. I'm sat in the living room waiting for him to come off the computer (where he was supposedly sorting this movie out) only to hear him playing on battlefield, knowing full well I was waiting for him. I didn't say anything, I left it until 9pm snd then went in and asked how the film was coming on, he said he was trying to get it to work. I calmly said "we could always just watch TV?" ... Well apparently it turns out that me saying that is me putting pressure on him (!!!) and slagging him off.
I'm absolutely sick to death of him to be honest, I almost feel a bit bullied. Everything I say he sighs, snaps, turns it into an argument. This past week has been horrendous.